IGN:New PDF engine can be accessed via calibre-debug --pdfreflow

src/calibre/debug.py

@@ -38,6 +38,9 @@ Run an embedded python interpreter.
             help='Add a simple plugin (i.e. a plugin that consists of only a '
             '.py file), by specifying the path to the py file containing the '
             'plugin code.')
+    parser.add_option('--pdfreflow', default=None,
+            help='Path to PDF file to try and reflow. Output will be placed in '
+            'current directory. ')
 
     return parser
 
@@ -210,6 +213,11 @@ def main(args=sys.argv):
         prints('CALIBRE_RESOURCES_LOCATION='+sys.resources_location)
         prints('CALIBRE_EXTENSIONS_LOCATION='+sys.extensions_location)
         prints('CALIBRE_PYTHON_PATH='+os.pathsep.join(sys.path))
+    elif opts.pdfreflow:
+        from calibre.ebooks.pdf.reflow import option_parser as px, run
+        from calibre.utils.logging import default_log
+        opts2, args = px().parse_args(['xxxx', '-vvvv', opts.pdfreflow])
+        run(opts2, opts.pdfreflow, default_log)
     else:
         from IPython.Shell import IPShellEmbed
         ipshell = IPShellEmbed()

src/calibre/ebooks/pdf/fonts.cpp

@@ -0,0 +1,143 @@
+/**
+ * Copyright 2009 Kovid Goyal <kovid@kovidgoyal.net>
+ * License: GNU GPL v3
+ */
+
+
+
+#include "fonts.h"
+#include "utils.h"
+
+using namespace calibre_reflow;
+using namespace std;
+
+XMLColor::XMLColor(GfxRGB rgb) {
+  this->r = static_cast<int>(rgb.r/65535.0*255.0);
+  this->g = static_cast<int>(rgb.g/65535.0*255.0);
+  this->b = static_cast<int>(rgb.b/65535.0*255.0);
+  if (!(this->ok(this->r) && this->ok(this->b) && this->ok(this->g))) {
+    this->r = 0; this->g = 0; this->b = 0;
+  }
+}
+
+string XMLColor::str() const {
+    ostringstream oss;
+    oss << "rgb(" << this->r << "," << this->g << "," << this->b << ")";
+    return oss.str();
+}
+
+static const char *FONT_MODS[7] = {
+    "-bolditalic", "-boldoblique", "-bold", "-italic", "-oblique", "-roman",
+    NULL
+};
+
+#define ap_toupper(c) (toupper(((unsigned char)(c))))
+static inline
+char *strcasestr( char *h, char *n )
+{ /* h="haystack", n="needle" */
+    char *a=h, *e=n;
+
+    if( !h || !*h || !n || !*n ) { return 0; }
+
+    while( *a && *e ) {
+        if( ap_toupper(*a)!=ap_toupper(*e) ) {
+            ++h; a=h; e=n;
+        }
+        else {
+            ++a; ++e;
+        }
+    }
+    return *e ? 0 : h;
+}
+
+static string* family_name(const string *font_name) {
+    if (!font_name) return NULL;
+    string *fn = new string(*font_name);
+    size_t pos;
+    const char *p;
+    for (size_t i = 0; FONT_MODS[i] != NULL; i++) {
+        p = strcasestr(fn->c_str(), FONT_MODS[i]);
+        if (p != NULL) {
+            pos = p - fn->c_str();
+            fn->replace(pos, strlen(FONT_MODS[i]), "");
+            break;
+        }
+    }
+    return fn;
+}
+
+XMLFont::XMLFont(string* font_name, double size, GfxRGB rgb) :
+        size(size-1), line_size(-1.0), italic(false), bold(false), font_name(font_name),
+        font_family(NULL), color(rgb)  {
+
+    if (!this->font_name) this->font_name = new string(DEFAULT_FONT_FAMILY);
+    this->font_family = family_name(this->font_name);
+    if (strcasestr(font_name->c_str(), "bold")) this->bold = true;
+
+    if (strcasestr(font_name->c_str(),"italic")||
+        strcasestr(font_name->c_str(),"oblique")) this->italic = true;
+
+
+}
+
+XMLFont& XMLFont::operator=(const XMLFont& x){
+   if (this==&x) return *this; 
+   this->size = x.size;
+   this->line_size = x.line_size;
+   this->italic = x.italic;
+   this->bold = x.bold;
+   this->color = x.color;
+   if (this->font_name) delete this->font_name;
+   this->font_name = new string(*x.font_name);
+   if (this->font_family) delete this->font_family;
+   this->font_family = new string(*x.font_family);
+   return *this;
+}
+
+bool XMLFont::operator==(const XMLFont &f) const {
+    return (fabs(this->size - f.size) < 0.1) && 
+        (fabs(this->line_size - f.line_size) < 0.1) &&
+        (this->italic == f.italic) &&
+        (this->bold == f.bold) &&
+        (this->color == f.color) &&
+        ((*this->font_family) == (*f.font_family));
+}
+
+bool XMLFont::eq_upto_inline(const XMLFont &f) const {
+    return (fabs(this->size - f.size) < 0.1) && 
+        (fabs(this->line_size - f.line_size) < 0.1) &&
+        (this->color == f.color) &&
+        ((*this->font_family) == (*f.font_family));
+}
+
+string XMLFont::str(Fonts::size_type id) const {
+    ostringstream oss;
+    oss << "<font id=\"" << id << "\" ";
+    oss << "family=\"" << encode_for_xml(*this->font_family) << "\" ";
+    oss << "color=\"" << this->color.str() << "\" ";
+    oss << setiosflags(ios::fixed) << setprecision(2) 
+        << "size=\"" << this->size << "\"";
+    oss << "/>";
+    return oss.str();
+}
+
+Fonts::size_type Fonts::add_font(XMLFont *f) {
+    Fonts::iterator it;
+    size_type i;
+    for ( i=0, it=this->begin(); it < this->end(); it++, i++ ) {
+        if (**it == *f) return i;
+    }
+    this->push_back(f);
+    return this->size()-1;
+}
+
+Fonts::size_type Fonts::add_font(string* font_name, double size, GfxRGB rgb) {
+    XMLFont *f = new XMLFont(font_name, size, rgb);
+    return this->add_font(f);
+}
+
+Fonts::~Fonts() {
+    Fonts::iterator it;
+    for ( it=this->begin(); it < this->end(); it++ ) delete *it;
+    this->resize(0);
+}

src/calibre/ebooks/pdf/fonts.h

@@ -0,0 +1,105 @@
+/**
+ * Copyright 2009 Kovid Goyal <kovid@kovidgoyal.net>
+ * License: GNU GPL v3
+ */
+
+
+
+#ifndef CALIBRE_REFLOW_FONTS
+#define CALIBRE_REFLOW_FONTS
+
+#include <vector>
+#include <sstream>
+#include <iomanip>
+#include <ctype.h>
+#include <math.h>
+#include <GfxState.h>
+
+using namespace std;
+
+#define DEFAULT_FONT_FAMILY "Times New Roman"
+
+namespace calibre_reflow {
+
+class XMLColor {
+
+ private:
+   unsigned int r;
+   unsigned int g;
+   unsigned int b;
+   inline bool ok(unsigned int xcol) const { 
+       return ( (xcol <= 255) && (xcol >= 0) );
+   }
+
+ public:
+   XMLColor():r(0),g(0),b(0){}
+
+   XMLColor(GfxRGB rgb);
+   
+   XMLColor(const XMLColor& x) {
+       this->r=x.r; this->g=x.g; this->b=x.b;
+   }
+   
+   XMLColor& operator=(const XMLColor &x){
+     this->r=x.r; this->g=x.g; this->b=x.b;
+     return *this;
+   }
+   
+   ~XMLColor(){}
+   
+   string str() const; 
+
+   bool operator==(const XMLColor &col) const {
+     return ((r==col.r)&&(g==col.g)&&(b==col.b));
+   }
+
+};  
+
+
+class XMLFont {
+
+private:
+    double size;
+    double line_size;
+    bool italic;
+    bool bold;
+    string *font_name;
+    string *font_family;
+    XMLColor color;
+
+public:  
+    XMLFont(const char *font_family=DEFAULT_FONT_FAMILY, double size=12.0) : 
+        size(size), line_size(-1.0), italic(false), bold(false),
+        font_name(new string(font_family)), font_family(new string(font_family)),
+        color() {}
+
+    XMLFont(string* font_name, double size, GfxRGB rgb);    
+    XMLFont(const XMLFont& other) :
+        size(other.size), line_size(other.line_size), italic(other.italic),
+        bold(other.bold), font_name(new string(*other.font_name)),
+        font_family(other.font_family), color(other.color) {}
+
+    XMLColor get_color() { return this->color; }
+    string* get_font_name() { return this->font_name; }
+    double get_size() const { return this->size; }
+    double get_line_size() { return this->line_size; }
+    void set_line_size(double ls) { this->line_size = ls; } 
+    bool is_italic() const { return this->italic; }
+    bool is_bold() const { return this->bold; }
+    ~XMLFont() { delete this->font_name; delete this->font_family; }
+    XMLFont& operator=(const XMLFont& other);
+    bool operator==(const XMLFont &other) const;
+    bool eq_upto_inline(const XMLFont &f) const;
+    string str(vector<XMLFont*>::size_type id) const;
+};
+
+class Fonts : public vector<XMLFont*> {
+    public:
+        Fonts::size_type add_font(XMLFont *f);
+        Fonts::size_type add_font(string* font_name, double size, GfxRGB rgb); 
+        ~Fonts();
+};
+
+
+}
+#endif

src/calibre/ebooks/pdf/images.cpp

@@ -0,0 +1,289 @@
+#include <stdio.h>
+#include <errno.h>
+#include <sstream>
+#include <algorithm>
+#include <iomanip>
+#include <math.h>
+#include <iostream>
+#include <wand/MagickWand.h>
+
+#include "images.h"
+#include "utils.h"
+
+#define xoutRound(x) ( static_cast<int>(round(x)) )
+using namespace std;
+using namespace calibre_reflow;
+
+calibre_reflow::ImageInfo::ImageInfo(GfxState *state) {
+    // get image position and size
+    state->transform(0, 0, &xt, &yt);
+    state->transformDelta(1, 1, &wt, &ht);
+    if (wt > 0) {
+        x0 = xoutRound(xt);
+        w0 = xoutRound(wt);
+    } else {
+        x0 = xoutRound(xt + wt);
+        w0 = xoutRound(-wt);
+    }
+    if (ht > 0) {
+        y0 = xoutRound(yt);
+        h0 = xoutRound(ht);
+    } else {
+        y0 = xoutRound(yt + ht);
+        h0 = xoutRound(-ht);
+    }
+    state->transformDelta(1, 0, &xt, &yt);
+    rotate = fabs(xt) < fabs(yt);
+    if (rotate) {
+        w1 = h0;
+        h1 = w0;
+        x_flip = ht < 0;
+        y_flip = wt > 0;
+    } else {
+        w1 = w0;
+        h1 = h0;
+        x_flip = wt < 0;
+        y_flip = ht > 0;
+    }
+    //cout << x_flip << "|" << y_flip << endl;
+}
+
+void XMLImages::clear() {
+    vector<XMLImage*>::iterator it;
+    for (it = this->masks.begin(); it < this->masks.end(); it++)
+        delete *it;
+    for (it = this->images.begin(); it < this->images.end(); it++)
+        delete *it;
+    this->masks.clear();
+    this->images.clear();
+}
+
+void XMLImages::add_mask(GfxState *state, Object *ref, Stream *str,
+				  unsigned int width, unsigned int height, bool invert,
+				  bool interpolate, bool inline_img) {
+}
+
+static void throw_magick_exception(MagickWand *wand) {
+    ExceptionType severity;
+    char *description = MagickGetException(wand, &severity);
+    ostringstream oss;
+    oss << description << endl;
+    description=(char *) MagickRelinquishMemory(description);
+    wand = DestroyMagickWand(wand);
+    MagickWandTerminus();
+    throw ReflowException(oss.str().c_str());
+}
+
+
+static void flip_image(string file_name, bool x_flip, bool y_flip) {
+    MagickWand *magick_wand;
+    MagickBooleanType status;
+
+    MagickWandGenesis();
+    magick_wand = NewMagickWand();
+    status = MagickReadImage(magick_wand, file_name.c_str());
+    if (status == MagickFalse) throw_magick_exception(magick_wand);
+
+    if (y_flip) {
+        status = MagickFlipImage(magick_wand);
+        if (status == MagickFalse) throw_magick_exception(magick_wand);
+    }
+    if (x_flip) {
+        status = MagickFlopImage(magick_wand);
+        if (status == MagickFalse) throw_magick_exception(magick_wand);
+    }
+
+    status = MagickWriteImage(magick_wand, NULL);
+    if (status == MagickFalse) throw_magick_exception(magick_wand);
+
+    magick_wand = DestroyMagickWand(magick_wand);
+    MagickWandTerminus();
+}
+
+void XMLImages::add(GfxState *state, Object *ref, Stream *str,
+			      unsigned int width, unsigned int height, GfxImageColorMap *colorMap,
+			      bool interpolate, int *maskColors, bool inline_img) {
+    XMLImage *img = new XMLImage(state);
+    this->images.push_back(img); 
+    img->width = width; img->height = height;
+    img->type = (str->getKind() == strDCT) ? jpeg : png;
+    string file_name = this->file_name(img);
+
+    FILE *of = fopen(file_name.c_str(), "wb");
+    if (!of) throw ReflowException(strerror(errno));
+
+    if (img->type == jpeg) {
+        int c;
+        str = ((DCTStream *)str)->getRawStream();
+        str->reset();
+
+        // copy the stream
+        while ((c = str->getChar()) != EOF) fputc(c, of);
+    } else { //Render as PNG
+        Guchar *p;
+        GfxRGB rgb;
+        png_byte *row = (png_byte *) malloc(3 * width);   // 3 bytes/pixel: RGB
+        png_bytep *row_pointer= &row;
+
+        PNGWriter *writer = new PNGWriter();
+        writer->init(of, width, height); 
+
+        // Initialize the image stream
+        ImageStream *imgStr = new ImageStream(str, width,
+                            colorMap->getNumPixelComps(), colorMap->getBits());
+        imgStr->reset();
+
+        // For each line...
+        for (unsigned int y = 0; y < height; y++) {
+            // Convert into a PNG row
+            p = imgStr->getLine();
+            for (unsigned int x = 0; x < width; x++) {
+                colorMap->getRGB(p, &rgb);
+                // Write the RGB pixels into the row
+                row[3*x]= colToByte(rgb.r);
+                row[3*x+1]= colToByte(rgb.g);
+                row[3*x+2]= colToByte(rgb.b);
+                p += colorMap->getNumPixelComps();
+            }
+
+            writer->writeRow(row_pointer);
+        }
+
+        writer->close();
+        delete writer;
+
+        free(row);
+        imgStr->close();
+        delete imgStr;
+
+    }
+    fclose(of);
+    img->written = true;
+    if (img->info.x_flip || img->info.y_flip)
+        flip_image(file_name, img->info.x_flip, img->info.y_flip);
+}
+
+
+string XMLImages::file_name(const XMLImage *img) const {
+    vector<XMLImage*>::const_iterator ir, mr;
+    size_t idx = 0;
+    bool mask = false;
+
+    ir = find( this->images.begin(), this->images.end(), img);
+    if (ir == this->images.end()) {
+        mr = find( this->masks.begin(), this->masks.end(), img);
+        idx = mr - this->masks.begin();
+        mask = true;
+    } else idx = ir - this->images.begin();
+
+    ostringstream oss;
+    oss << ((mask) ? "mask" : "image") << "-" << idx+1 << '.';
+    oss << ((img->type == jpeg) ? "jpg" : "png");
+    return oss.str();
+}
+
+vector<string*> XMLImages::str() const {
+    vector<string*> ans;
+    vector <XMLImage*>::const_iterator it;
+    for (it = this->masks.begin(); it < this->masks.end(); it++) {
+        if ((*it)->written) 
+           ans.push_back(new string((*it)->str(it - this->masks.begin(), true,
+                           this->file_name(*it)))); 
+    }
+    for (it = this->images.begin(); it < this->images.end(); it++) {
+        if ((*it)->written) 
+           ans.push_back(new string((*it)->str(it - this->images.begin(), false,
+                           this->file_name(*it)))); 
+    }
+    return ans; 
+}
+
+string XMLImage::str(size_t num, bool mask, string file_name) const {
+    ostringstream oss;
+    oss << "<img type=\"" << ((mask) ? "mask" : "image") << "\" "
+        << "src=\"" << file_name << "\" "
+        << "iwidth=\"" << this->width << "\" iheight=\"" << this->height << "\" "
+        << "rwidth=\"" << this->info.w1 << "\" rheight=\"" << this->info.h1 << "\" "
+        << setiosflags(ios::fixed) << setprecision(2)
+        << "top=\"" << this->info.y0 << "\" left=\"" << this->info.x0 << "\"/>";
+    return oss.str();
+
+
+}
+PNGWriter::~PNGWriter()
+{
+	/* cleanup heap allocation */
+	png_destroy_write_struct(&png_ptr, &info_ptr);
+}
+
+void PNGWriter::init(FILE *f, int width, int height)
+{
+	/* initialize stuff */
+	png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+	if (!png_ptr) 
+        throw ReflowException("png_create_write_struct failed");
+
+	info_ptr = png_create_info_struct(png_ptr);
+	if (!info_ptr) 
+		throw ReflowException("png_create_info_struct failed");
+
+	if (setjmp(png_jmpbuf(png_ptr))) 
+		throw ReflowException("png_jmpbuf failed");
+
+	/* write header */
+	png_init_io(png_ptr, f);
+	if (setjmp(png_jmpbuf(png_ptr))) 
+		throw ReflowException("Error during writing header");
+	
+	// Set up the type of PNG image and the compression level
+	png_set_compression_level(png_ptr, Z_BEST_COMPRESSION);
+
+	png_byte bit_depth = 8;
+	png_byte color_type = PNG_COLOR_TYPE_RGB;
+	png_byte interlace_type = PNG_INTERLACE_NONE;
+
+	png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, color_type, interlace_type, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+
+	png_write_info(png_ptr, info_ptr);
+	if (setjmp(png_jmpbuf(png_ptr))) 
+		throw ReflowException("error during writing png info bytes");
+	
+}
+
+void PNGWriter::writePointers(png_bytep *rowPointers)
+{
+	png_write_image(png_ptr, rowPointers);
+	/* write bytes */
+	if (setjmp(png_jmpbuf(png_ptr))) 
+        throw ReflowException("Error during writing bytes");
+}
+
+void PNGWriter::writeRow(png_bytep *row)
+{
+	// Write the row to the file
+	png_write_rows(png_ptr, row, 1);
+	if (setjmp(png_jmpbuf(png_ptr))) 
+		throw ReflowException("error during png row write");
+}
+
+void PNGWriter::close()
+{
+	/* end write */
+	png_write_end(png_ptr, info_ptr);
+	if (setjmp(png_jmpbuf(png_ptr))) 
+		throw ReflowException("Error during end of write");
+}
+
+void PNGWriter::write_splash_bitmap(SplashBitmap *bitmap) {
+    SplashColorPtr row = bitmap->getDataPtr();
+    int height = bitmap->getHeight();
+    int row_size = bitmap->getRowSize();
+    png_bytep *row_pointers = new png_bytep[height];
+
+    for (int y = 0; y < height; ++y) {
+        row_pointers[y] = row;
+        row += row_size;
+    }
+    this->writePointers(row_pointers);
+    delete[] row_pointers;
+}

src/calibre/ebooks/pdf/images.h

@@ -0,0 +1,94 @@
+#ifndef _CALIBRE_REFLOW_IMAGES
+#define _CALIBRE_REFLOW_IMAGES
+
+#include <vector>
+#include <GfxState.h>
+#include <splash/SplashBitmap.h>
+#include <png.h>
+
+using namespace std;
+
+namespace calibre_reflow {
+
+    enum ImageType {
+        jpeg, png
+    };
+
+    class PNGWriter
+    {
+        public:
+            PNGWriter() {}
+            ~PNGWriter();
+
+            void init(FILE *f, int width, int height);
+
+            void writePointers(png_bytep *rowPointers);
+            void writeRow(png_bytep *row);
+            void write_splash_bitmap(SplashBitmap *bitmap);
+            void close();
+
+        private:
+            png_structp png_ptr;
+            png_infop info_ptr;
+    };
+
+    class ImageInfo {
+        public:
+
+            ImageInfo(GfxState *state);
+
+        private:
+            int x0, y0;			// top left corner of image
+            int w0, h0, w1, h1;		// size of image
+            double xt, yt, wt, ht;
+            bool rotate, x_flip, y_flip;
+
+            friend class XMLImage; 
+            friend class XMLImages;
+
+    };
+
+    class XMLImage {
+        private:
+            double x, y;
+            unsigned int width, height;
+            ImageType type;
+            bool written;
+            ImageInfo info;
+
+            friend class XMLImages;
+
+        public:
+            XMLImage(GfxState *state) :
+                x(0.), y(0.), width(0), height(0), type(jpeg), written(false), info(state)
+            {}
+
+            ~XMLImage() {}
+
+            string str(size_t num, bool mask, string file_name) const;
+    };
+
+    class XMLImages {
+        private:
+            vector<XMLImage*> images;
+            vector<XMLImage*> masks;
+
+        public:
+
+            ~XMLImages() { this->clear(); }
+
+            void add_mask(GfxState *state, Object *ref, Stream *str,
+				  unsigned int width, unsigned int height, bool invert,
+				  bool interpolate, bool inline_img);
+
+            void add(GfxState *state, Object *ref, Stream *str,
+			      unsigned int width, unsigned int height, GfxImageColorMap *colorMap,
+			      bool interpolate, int *maskColors, bool inline_img);
+
+            string file_name(const XMLImage *img) const;
+            vector<string*> str() const;
+            void clear();
+    };
+}
+
+#endif

src/calibre/ebooks/pdf/links.cpp

@@ -0,0 +1,56 @@
+/**
+ * Copyright 2009 Kovid Goyal <kovid@kovidgoyal.net>
+ * License: GNU GPL v3
+ */
+
+
+
+#include "links.h"
+#include "utils.h"
+
+using namespace std;
+using namespace calibre_reflow;
+
+XMLLink& XMLLink::operator=(const XMLLink &x) {
+    if (this==&x) return *this;
+    if (this->dest) {delete this->dest; this->dest=NULL;} 
+    this->x_min = x.x_min;
+    this->y_min = x.y_min;
+    this->x_max = x.x_max;
+    this->y_max = x.y_max;
+    this->dest = new string(*x.dest);
+    return *this;
+}
+
+bool XMLLink::in_link(double xmin,double ymin,double xmax,double ymax) const {
+    double y = (ymin + ymax)/2;
+    if (y > this->y_max) return false;
+    return (y > this->y_min) && (xmin < this->x_max) && (xmax > this->x_min);
+}
+
+string XMLLink::get_link_start() {
+    ostringstream oss;
+    oss << "<a href=\"";
+    if (this->dest) oss << encode_for_xml(*this->dest);
+    oss << "\">";
+    return oss.str();
+}
+
+XMLLinks::~XMLLinks() {
+    for(XMLLinks::iterator i = this->begin(); i != this->end(); i++)
+        delete *i;
+    this->clear();
+}
+
+bool XMLLinks::in_link(double xmin, double ymin, double xmax,
+        double ymax, XMLLinks::size_type &p) const {
+    for(XMLLinks::const_iterator i = this->begin(); i != this->end(); i++) {
+        if ( (*i)->in_link(xmin, ymin, xmax, ymax) ) {
+            p = (i - this->begin());
+            return true;
+        }
+    }
+    return false;
+}
+
+

src/calibre/ebooks/pdf/links.h

@@ -0,0 +1,69 @@
+/**
+ * Copyright 2009 Kovid Goyal <kovid@kovidgoyal.net>
+ * License: GNU GPL v3
+ */
+
+
+
+#ifndef _CALIBRE_XML_LINKS
+#define _CALIBRE_XML_LINKS
+
+#include <vector>
+#include <sstream>
+
+using namespace std;
+
+namespace calibre_reflow {
+
+class XMLLink {
+
+private:  
+  double x_min;
+  double y_min;
+  double x_max;
+  double y_max;
+  string* dest;
+
+public:
+  XMLLink() : dest(NULL) {}
+  XMLLink(const XMLLink& x) : 
+      x_min(x.x_min), y_min(x.y_min), x_max(x.x_max),
+      y_max(x.y_max), dest(new string(*x.dest)) {}
+  XMLLink(double x_min, double y_min, double x_max,
+          double y_max, const char *dest) :
+      x_min((x_min < x_max) ? x_min : x_max),
+      y_min((y_min < y_max) ? y_min : y_max),
+      x_max((x_max > x_min) ? x_max : x_min),
+      y_max((y_max > y_min) ? y_max : y_min),
+      dest(new string(dest)) {}
+
+  ~XMLLink() { delete this->dest; }
+
+  string* get_dest() { return this->dest; }
+  double  get_x1() const {return x_min;}
+  double  get_x2() const {return x_max;}
+  double  get_y1() const {return y_min;}
+  double  get_y2() const {return y_max;}
+
+  XMLLink& operator=(const XMLLink &x);
+  bool operator==(const XMLLink &x) const {
+      return (this->dest != NULL) && (x.dest != NULL) && 
+          this->dest->compare(*x.dest) == 0;
+  }
+  bool in_link(double xmin, double ymin, double xmax, double ymax) const;
+  string get_link_start();
+  
+};
+
+class XMLLinks : public vector<XMLLink*> {
+    public:
+        ~XMLLinks();
+
+        bool in_link(double xmin, double ymin, double xmax,
+                    double ymax, XMLLinks::size_type &p) const;
+};
+
+
+}
+#endif
+   

src/calibre/ebooks/pdf/main.cpp

@@ -0,0 +1,150 @@
+#ifndef PDF2XML
+#define UNICODE
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+#endif
+
+#include "reflow.h"
+
+using namespace std;
+using namespace calibre_reflow;
+
+#ifndef PDF2XML
+
+extern "C" {
+
+    static PyObject *
+    pdfreflow_reflow(PyObject *self, PyObject *args) {
+        char *pdfdata;
+        Py_ssize_t size;
+
+        if (!PyArg_ParseTuple(args, "s#", &pdfdata, &size))
+            return NULL;
+
+        try {
+            Reflow reflow(pdfdata, static_cast<std::ifstream::pos_type>(size));
+            reflow.render();
+        } catch (std::exception &e) {
+            PyErr_SetString(PyExc_RuntimeError, e.what()); return NULL;
+        } catch (...) {
+            PyErr_SetString(PyExc_RuntimeError,
+                    "Unknown exception raised while rendering PDF"); return NULL;
+        }
+
+        Py_RETURN_NONE;
+    }
+
+    static PyObject *
+    pdfreflow_get_metadata(PyObject *self, PyObject *args) {
+        char *pdfdata;
+        Py_ssize_t size;
+        map<string,string> info;
+        PyObject *cover;
+        PyObject *ans = PyDict_New();
+
+        if (!ans) return PyErr_NoMemory();
+
+        if (!PyArg_ParseTuple(args, "s#O", &pdfdata, &size, &cover))
+            return NULL;
+
+        try {
+            Reflow reflow(pdfdata, static_cast<std::ifstream::pos_type>(size));
+            info = reflow.get_info();
+            if (PyObject_IsTrue(cover)) {
+                if (!reflow.is_locked()) {
+                    size_t size;
+                    char *data = reflow.render_first_page(&size);
+                    PyObject *d = PyString_FromStringAndSize(data, size);
+                    delete[] data;
+                    if (d == NULL) return PyErr_NoMemory();
+                    if (PyDict_SetItemString(ans, "cover", d) == -1) return NULL;
+                } else {
+                    if (PyDict_SetItemString(ans, "cover", Py_None) == -1) return NULL;
+                }
+            }
+        } catch (std::exception &e) {
+            PyErr_SetString(PyExc_RuntimeError, e.what()); return NULL;
+        } catch (...) {
+            PyErr_SetString(PyExc_RuntimeError,
+                    "Unknown exception raised while getting metadata from PDF"); return NULL;
+        }
+
+        for (map<string,string>::const_iterator it = info.begin() ; it != info.end(); it++ ) {
+            PyObject *key = PyUnicode_Decode((*it).first.c_str(), (*it).first.size(), "UTF-8", "replace");
+            if (!key) return NULL;
+            PyObject *val = PyUnicode_Decode((*it).second.c_str(), (*it).second.size(), "UTF-8", "replace");
+            if (!val) return NULL;
+            if (PyDict_SetItem(ans, key, val) == -1) return NULL;
+        }
+        return ans;
+    }
+
+
+    static 
+    PyMethodDef pdfreflow_methods[] = {
+        {"reflow", pdfreflow_reflow, METH_VARARGS,
+        "reflow(pdf_data)\n\n"
+                "Reflow the specified PDF."
+        },
+        {"get_metadata", pdfreflow_get_metadata, METH_VARARGS,
+        "get_metadata(pdf_data, cover)\n\n"
+                "Get metadata and (optionally) cover from the specified PDF."
+        },
+
+        {NULL, NULL, 0, NULL}
+    };
+
+
+    PyMODINIT_FUNC
+    initpdfreflow(void) 
+    {
+        PyObject* m;
+
+        m = Py_InitModule3("pdfreflow", pdfreflow_methods,
+                        "Reflow a PDF file");
+
+        if (m == NULL) return;
+
+    }
+}
+
+
+#else
+
+int main(int argc, char **argv) {
+    char *memblock;
+    ifstream::pos_type size;
+
+    if (argc != 2)  {
+        cerr << "Usage: " << argv[0] << " file.pdf" << endl;
+        return 1;
+    }
+
+    ifstream file (argv[1], ios::in|ios::binary|ios::ate);
+    if (file.is_open()) {
+        size = file.tellg();
+        memblock = new char[size];
+        file.seekg (0, ios::beg);
+        file.read (memblock, size);
+        file.close();
+    } else {
+        cerr << "Unable to read from: " << argv[1] << endl;
+        return 1;
+    }
+
+    try {
+        Reflow reflow(memblock, size);
+        reflow.render();
+        size_t sz = 0;
+        char *data = reflow.render_first_page(&sz);
+        ofstream file("cover.png", ios::binary);
+        file.write(data, sz);
+        file.close();
+    } catch(exception &e) {
+        cerr << e.what() << endl;
+        return 1;
+    }
+
+    return 0;
+}
+#endif

src/calibre/ebooks/pdf/reflow.cpp

@@ -0,0 +1,911 @@
+/**
+ * Copyright 2009 Kovid Goyal <kovid@kovidgoyal.net>
+ * License: GNU GPL v3
+ */
+
+#include <Object.h>
+#include <Outline.h>
+#include <PDFDocEncoding.h>
+#include <goo/GooList.h>
+#include <SplashOutputDev.h>
+#include <splash/SplashBitmap.h>
+#include <splash/SplashErrorCodes.h>
+#include "reflow.h"
+#include "utils.h"
+
+using namespace std;
+using namespace calibre_reflow;
+
+static const size_t num_info_keys = 8;
+static const char* info_keys[num_info_keys] = {
+    "Title", "Subject", "Keywords", "Author", "Creator", "Producer",
+    "CreationDate", "ModDate"
+};
+
+
+//------------------------------------------------------------------------
+// XMLString
+//------------------------------------------------------------------------
+
+XMLString::XMLString(GfxState *state, GooString *s, double current_font_size,
+        Fonts *fonts) : 
+    text(new vector<Unicode>(0)), x_right(new vector<double>(0)),
+    yx_next(NULL), xy_next(NULL), fonts(fonts), font_idx(0), xml_text(NULL),
+    link(NULL), x_min(0), x_max(0), y_min(0), y_max(0), col(0), dir(text_dir_unknown)
+{
+    double x = 0, y = 0;
+    GfxFont *font;
+
+    state->transform(state->getCurX(), state->getCurY(), &x, &y);
+
+    if ((font = state->getFont())) {
+        double ascent = font->getAscent();
+        double descent = font->getDescent();
+        if( ascent > 1.05 ){
+            //printf( "ascent=%.15g is too high, descent=%.15g\n", ascent, descent );
+            ascent = 1.05;
+        }
+        if( descent < -0.4 ){
+            //printf( "descent %.15g is too low, ascent=%.15g\n", descent, ascent );
+            descent = -0.4;
+        }
+        this->y_min = y - ascent * current_font_size;
+        this->y_max = y - descent * current_font_size;
+        GfxRGB rgb;
+        state->getFillRGB(&rgb);
+        GooString *name = state->getFont()->getName();
+        if (!name)
+            this->font_idx = this->fonts->add_font(NULL, current_font_size-1, rgb);
+        else
+            this->font_idx = this->fonts->add_font(
+                    new string(name->getCString()), current_font_size-1, rgb);
+
+    } else {
+        // this means that the PDF file draws text without a current font,
+        // which should never happen
+        this->y_min = y - 0.95 * current_font_size;
+        this->y_max = y + 0.35 * current_font_size;
+    }
+    if (this->y_min == this->y_max) {
+        // this is a sanity check for a case that shouldn't happen -- but
+        // if it does happen, we want to avoid dividing by zero later
+        this->y_min = y;
+        this->y_max = y + 1;
+    }
+}
+
+void XMLString::add_char(GfxState *state, double x, double y,
+            	       double dx, double dy, Unicode u) {
+    if (dir == text_dir_unknown) {
+        //dir = UnicodeMap::getDirection(u);
+        dir = text_dir_left_right;
+    } 
+
+    if (this->text->capacity() == this->text->size()) {
+        this->text->reserve(text->size()+16);
+        this->x_right->reserve(x_right->size()+16);
+    }
+    this->text->push_back(u);
+    if (this->length() == 1) {
+        this->x_min = x;
+    }
+    this->x_max = x + dx;
+    this->x_right->push_back(x_max);
+    //printf("added char: %f %f xright = %f\n", x, dx, x+dx);
+}
+
+void XMLString::end_string()
+{
+    if( this->dir == text_dir_right_left && this->length() > 1 )
+    {
+        //printf("will reverse!\n");
+        reverse(this->text->begin(), this->text->end());
+    }
+}
+
+static string encode_unicode_chars(const Unicode *u, size_t num) {
+    ostringstream oss;
+    UnicodeMap *uMap;
+    char buf[10];
+    int n;
+    if (!(uMap = globalParams->getTextEncoding())) {
+        throw ReflowException("Failed to allocate unicode map.");
+    }
+
+    for (size_t i = 0; i < num; i++) {
+        switch (u[i]) {
+            case '&': oss << "&amp;";  break;
+        	case '<': oss << "&lt;";  break;
+        	case '>': oss << "&gt;";  break;
+        	default:  
+	        {
+                // convert unicode to string
+                if ((n = uMap->mapUnicode(u[i], buf, sizeof(buf))) > 0) {
+                    buf[n] = 0;
+                    oss << buf;
+                }
+            }
+        }
+    }
+    uMap->decRefCnt();
+    return oss.str();
+}
+
+void XMLString::encode() {
+    delete this->xml_text;
+    this->xml_text = new string(encode_unicode_chars(&((*this->text)[0]), this->text->size()));
+}
+
+string XMLString::str() const {
+        ostringstream oss;
+        oss << "<text font=\"" << this->font_idx << "\" ";
+        oss << setiosflags(ios::fixed) << setprecision(2)
+            << "top=\"" << this->y_min << "\" left=\"" << this->x_min
+            << "\" width=\"" << this->x_max - this->x_min << "\" "
+            << "height=\"" << this->y_max - this->y_min << "\">";
+        oss << *this->xml_text << "</text>";
+        return oss.str();
+}
+
+XMLString::~XMLString() {
+    delete this->text; delete this->x_right;
+}
+
+
+//------------------------------------------------------------------------
+// XMLPage
+//------------------------------------------------------------------------
+
+XMLPage::XMLPage(unsigned int num, GfxState *state, ofstream *output, Fonts* fonts) :
+    current_string(NULL), num(num), output(output), current_font_size(0.0),
+    yx_strings(NULL), xy_strings(NULL), yx_cur1(NULL), yx_cur2(NULL),
+    fonts(fonts), links(new XMLLinks())
+{
+    (*this->output) << setiosflags(ios::fixed) << setprecision(2) <<
+        "\t\t<page number=\"" << this->num << "\" width=\"" <<        
+        state->getPageWidth() << "\" height=\"" << state->getPageHeight() <<
+        "\">" << endl;
+    if (!(*this->output)) throw ReflowException(strerror(errno));
+}
+
+XMLPage::~XMLPage() {
+   (*this->output) << "\t\t</page>" << endl;
+   if (!(*this->output)) throw ReflowException(strerror(errno));
+   for (XMLString *tmp = this->yx_strings; tmp; tmp = tmp->yx_next)
+       delete tmp;
+
+   delete this->links;
+}
+
+void XMLPage::update_font(GfxState *state) {
+    GfxFont *font;
+    double *fm;
+    char *name;
+    int code;
+    double w;
+
+    current_font_size = state->getTransformedFontSize();
+
+    if ((font = state->getFont()) && font->getType() == fontType3) {
+        // This is a hack which makes it possible to deal with some Type 3
+        // fonts.  The problem is that it's impossible to know what the
+        // base coordinate system used in the font is without actually
+        // rendering the font.  This code tries to guess by looking at the
+        // width of the character 'm' (which breaks if the font is a
+        // subset that doesn't contain 'm').
+        for (code = 0; code < 256; ++code) {
+            if ((name = ((Gfx8BitFont *)font)->getCharName(code)) &&
+                name[0] == 'm' && name[1] == '\0')  break;
+            
+        }
+        if (code < 256) {
+            w = ((Gfx8BitFont *)font)->getWidth(code);
+            if (w != 0) {
+                // 600 is a generic average 'm' width -- yes, this is a hack
+                current_font_size *= w / 0.6;
+            }
+        }
+        fm = font->getFontMatrix();
+        if (fm[0] != 0) {
+            current_font_size *= fabs(fm[3] / fm[0]);
+        }
+    }
+
+}
+
+void XMLPage::draw_char(GfxState *state, double x, double y,
+                double dx, double dy,
+                double originX, double originY,
+                CharCode code, int nBytes, Unicode *u, int uLen) {
+    if ( (state->getRender() & 3) == 3)  return; //Hidden text
+    double x1, y1, w1, h1, dx2, dy2;
+    int i;
+    state->transform(x, y, &x1, &y1);
+    
+    // check that new character is in the same direction as current string
+    // and is not too far away from it before adding 
+    if (this->current_string->character_does_not_belong_to_string(state, x1)) {
+        this->end_string();
+        this->begin_string(state, NULL);
+    }
+    state->textTransformDelta(state->getCharSpace() * state->getHorizScaling(),
+                    0, &dx2, &dy2);
+    dx -= dx2;
+    dy -= dy2;
+    state->transformDelta(dx, dy, &w1, &h1);
+    if (uLen != 0) {
+        w1 /= uLen;
+        h1 /= uLen;
+    }
+    for (i = 0; i < uLen; ++i) {
+        this->current_string->add_char(state, x1 + i*w1, y1 + i*h1, w1, h1, u[i]);
+    }
+
+}
+
+void XMLPage::end_string() {
+  XMLString *p1 = NULL, *p2 = NULL;
+  double h, y1, y2;
+
+  // throw away zero-length strings -- they don't have valid xMin/xMax
+  // values, and they're useless anyway
+  if (this->current_string->length() == 0) {
+    delete this->current_string;
+    this->current_string = NULL;
+    return;
+  }
+
+  this->current_string->end_string();
+
+  // insert string in y-major list
+  h = this->current_string->height();
+  y1 = this->current_string->y_min + 0.5 * h;
+  y2 = this->current_string->y_min + 0.8 * h;
+  if (gFalse) { //rawOrder
+    p1 = this->yx_cur1;
+    p2 = NULL;
+  } else if (
+          (!this->yx_cur1 ||
+              (y1 >= this->yx_cur1->y_min &&
+               (y2 >= this->yx_cur1->y_max ||
+                this->current_string->x_max >= this->yx_cur1->x_min))) &&
+             (!this->yx_cur2 ||
+              (y1 < this->yx_cur2->y_min ||
+               (y2 < this->yx_cur2->y_max &&
+                this->current_string->x_max < this->yx_cur2->x_min)))
+             ) {
+    p1 = this->yx_cur1;
+    p2 = this->yx_cur2;
+  } else {
+    for (p1 = NULL, p2 = this->yx_strings; p2; p1 = p2, p2 = p2->yx_next) {
+      if (y1 < p2->y_min || (y2 < p2->y_max && this->current_string->x_max < p2->x_min))
+        break;
+    }
+    this->yx_cur2 = p2;
+  }
+  this->yx_cur1 = this->current_string;
+  if (p1)
+    p1->yx_next = this->current_string;
+  else
+    this->yx_strings = this->current_string;
+  this->current_string->yx_next = p2;
+  this->current_string = NULL;
+}
+
+void XMLPage::end() {
+  XMLLinks::size_type link_index = 0;
+  Fonts::size_type pos = 0;
+  XMLFont* h;
+
+  for (XMLString *tmp = this->yx_strings; tmp; tmp = tmp->yx_next) {
+     pos = tmp->font_idx;
+     h = this->fonts->at(pos);
+
+     tmp->encode();
+
+     if (this->links->in_link(
+            tmp->x_min, tmp->y_min, tmp->x_max, tmp->y_max, link_index)) {
+       tmp->link = links->at(link_index);
+     }
+  }
+
+  this->coalesce();
+
+  for (XMLString *tmp = yx_strings; tmp; tmp=tmp->yx_next) {
+    if (tmp->xml_text && tmp->xml_text->size() > 0) {
+        (*this->output) << "\t\t\t" << tmp->str() << endl;
+        if (!(*this->output)) throw ReflowException(strerror(errno));
+    }
+  }
+}
+
+static const char *strrstr( const char *s, const char *ss )
+{
+  const char *p = strstr( s, ss );
+  for( const char *pp = p; pp != NULL; pp = strstr( p+1, ss ) ){
+    p = pp;
+  }
+  return p;
+}
+
+
+static void close_tags( string *xml_text, bool &finish_a, bool &finish_italic, bool &finish_bold )
+{
+  const char *last_italic = finish_italic && ( finish_bold   || finish_a    ) ? strrstr( xml_text->c_str(), "<em>" ) : NULL;
+  const char *last_bold   = finish_bold   && ( finish_italic || finish_a    ) ? strrstr( xml_text->c_str(), "<strong>" ) : NULL;
+  const char *last_a      = finish_a      && ( finish_italic || finish_bold ) ? strrstr( xml_text->c_str(), "<a " ) : NULL;
+  if( finish_a && ( finish_italic || finish_bold ) && last_a > ( last_italic > last_bold ? last_italic : last_bold ) ) {
+    xml_text->append("</a>");
+    finish_a = false;
+  }
+  if( finish_italic && finish_bold && last_italic > last_bold ){
+    xml_text->append("</em>");
+    finish_italic = false;
+  }
+  if( finish_bold )
+    xml_text->append("</strong>");
+  if( finish_italic )
+    xml_text->append("</em>");
+  if( finish_a )
+    xml_text->append("</a>");
+}
+
+void XMLPage::coalesce() {
+    XMLString *str1, *str2, *str3;
+    XMLFont *hfont1, *hfont2;
+    double space, hor_space, vert_space, vert_overlap, size, x_limit;
+    bool add_space, found;
+    int n, i;
+    double cur_x, cur_y;
+
+    str1 = this->yx_strings;
+
+    if( !str1 ) return;
+
+    //----- discard duplicated text (fake boldface, drop shadows)
+  
+  	while (str1)
+	{
+		size = str1->y_max - str1->y_min;
+		x_limit = str1->x_min + size * 0.2;
+		found = false;
+		for (str2 = str1, str3 = str1->yx_next;
+			str3 && str3->x_min < x_limit;
+			str2 = str3, str3 = str2->yx_next)
+		{
+			if (str3->length() == str1->length() &&
+				!memcmp(str3->text, str1->text, str1->length() * sizeof(Unicode)) &&
+				fabs(str3->y_min - str1->y_min) < size * 0.2 &&
+				fabs(str3->y_max - str1->y_max) < size * 0.2 &&
+				fabs(str3->x_max - str1->x_max) < size * 0.2)
+			{
+				found = true;
+				//printf("found duplicate!\n");
+				break;
+			}
+		}
+		if (found)
+		{
+			str2->xy_next = str3->xy_next;
+			str2->yx_next = str3->yx_next;
+			delete str3;
+		}
+		else
+		{
+			str1 = str1->yx_next;
+		}
+  }		
+  
+  str1 = yx_strings;
+  
+  hfont1 = this->fonts->at(str1->font_idx);
+  if( hfont1->is_bold() )
+    str1->xml_text->insert(0, "<strong>");
+  if( hfont1->is_italic() )
+    str1->xml_text->insert(0, "<em>");
+  if (str1->get_link())
+      str1->xml_text->insert(0, str1->get_link()->get_link_start());
+  cur_x = str1->x_min; cur_y = str1->y_min;
+
+  while (str1 && (str2 = str1->yx_next)) {
+    hfont2 = this->fonts->at(str2->font_idx);
+    space = str1->y_max - str1->y_min;
+    hor_space = str2->x_min - str1->x_max;
+    vert_space = str2->y_min - str1->y_max;
+
+    vert_overlap = 0;
+    if (str2->y_min >= str1->y_min && str2->y_min <= str1->y_max)
+    {
+        vert_overlap = str1->y_max - str2->y_min;
+    } else if (str2->y_max >= str1->y_min && str2->y_max <= str1->y_max)
+    {
+        vert_overlap = str2->y_max - str1->y_min;
+    }     
+    if (
+	(
+	 (
+	   (str2->y_min < str1->y_max) 
+	   &&
+	  (hor_space > -0.5 * space && hor_space < space)
+	 ) 
+	) &&
+	(hfont1->eq_upto_inline(*hfont2)) && 
+	str1->dir == str2->dir // text direction the same
+       ) 
+    {
+      n = str1->length() + str2->length();
+      if ((add_space = hor_space > 0.1 * space)) {
+        ++n;
+      }
+  
+      str1->text->reserve((n + 15) & ~15);
+      str1->x_right->reserve((n + 15) & ~15);
+      if (add_space) {
+		  str1->text->push_back(0x20);
+		  str1->xml_text->push_back(' ');
+		  str1->x_right->push_back(str2->x_min);
+      }
+      
+      for (i = 0; i < str2->length(); i++) {
+    	str1->text->push_back(str2->text->at(i));
+	    str1->x_right->push_back(str2->x_right->at(i));
+      }
+
+      /* fix <i>, <b> if str1 and str2 differ and handle switch of links */
+      XMLLink *hlink1 = str1->get_link();
+      XMLLink *hlink2 = str2->get_link();
+      bool switch_links = !hlink1 || !hlink2 || !((*hlink1) == (*hlink2));
+      bool finish_a = switch_links && hlink1 != NULL;
+      bool finish_italic = hfont1->is_italic() && ( !hfont2->is_italic() || finish_a );
+      bool finish_bold   = hfont1->is_bold()   && 
+          ( !hfont2->is_bold()   || finish_a || finish_italic );
+      close_tags( str1->xml_text, finish_a, finish_italic, finish_bold );
+      if( switch_links && hlink2 != NULL ) {
+        string ls = hlink2->get_link_start();
+        str1->xml_text->append(ls);
+      }
+      if( ( !hfont1->is_italic() || finish_italic ) && hfont2->is_italic() )
+	    str1->xml_text->append("<em>");
+      if( ( !hfont1->is_bold() || finish_bold ) && hfont2->is_bold() )
+	    str1->xml_text->append("<strong>");
+
+
+      str1->xml_text->append(*str2->xml_text);
+      // str1 now contains href for link of str2 (if it is defined)
+      str1->link = str2->link; 
+      hfont1 = hfont2;
+      if (str2->x_max > str1->x_max) {
+    	str1->x_max = str2->x_max;
+      }
+      if (str2->y_max > str1->y_max) {
+    	str1->y_max = str2->y_max;
+      }
+      str1->yx_next = str2->yx_next;
+      delete str2;
+    } else { // keep strings separate
+      bool finish_a = str1->get_link() != NULL;
+      bool finish_bold   = hfont1->is_bold();
+      bool finish_italic = hfont1->is_italic();
+      close_tags( str1->xml_text, finish_a, finish_italic, finish_bold );
+     
+      str1->x_min = cur_x; str1->y_min = cur_y; 
+      str1 = str2;
+      cur_x = str1->x_min; cur_y = str1->y_min;
+      hfont1 = hfont2;
+      if ( hfont1->is_bold() )
+    	str1->xml_text->insert(0, "<strong>");
+      if( hfont1->is_italic() )
+    	str1->xml_text->insert(0, "<em>");
+      if( str1->get_link() != NULL ) {
+	    str1->xml_text->insert(0, str1->get_link()->get_link_start());
+      }
+    }
+  }
+  str1->x_min = cur_x; str1->y_min = cur_y;
+
+  bool finish_bold   = hfont1->is_bold();
+  bool finish_italic = hfont1->is_italic();
+  bool finish_a = str1->get_link() != NULL;
+  close_tags( str1->xml_text, finish_a, finish_italic, finish_bold );
+
+}
+
+
+//------------------------------------------------------------------------
+// XMLOutputDev
+//------------------------------------------------------------------------
+
+XMLOutputDev::XMLOutputDev(PDFDoc *doc) : 
+    current_page(NULL), output(new ofstream("index.xml", ios::trunc)),
+    fonts(new Fonts()), catalog(NULL), images(new XMLImages()), doc(doc)
+{
+    if (!(*this->output)) {
+        throw ReflowException(strerror(errno));
+    }
+    (*this->output) << "<pdfreflow>" << endl;
+    (*this->output) << "\t<pages>" << endl;
+    if (!(*this->output)) throw ReflowException(strerror(errno));
+}
+
+XMLOutputDev::~XMLOutputDev() {
+    (*this->output) << "\t</pages>" << endl;
+    if (!(*this->output)) throw ReflowException(strerror(errno));
+    (*this->output) << "\t<fonts>" << endl;
+    if (!(*this->output)) throw ReflowException(strerror(errno));
+    for (Fonts::const_iterator it = this->fonts->begin(); it < this->fonts->end(); it++) {
+        (*this->output) << "\t\t" << (*it)->str(it - this->fonts->begin()) << endl;
+        if (!(*this->output)) throw ReflowException(strerror(errno));
+    }
+    (*this->output) << "\t</fonts>" << endl;
+    if (!(*this->output)) throw ReflowException(strerror(errno));
+    (*this->output) << "</pdfreflow>" << endl;
+    if (!(*this->output)) throw ReflowException(strerror(errno));
+    this->output->close();
+    delete this->output;
+    delete this->fonts;
+    delete this->images;
+}
+
+static string get_link_dest(LinkAction *link, PDFDoc *doc) {
+  unsigned int page = 1;
+  ostringstream oss;
+
+  switch(link->getKind()) 
+  {
+      case actionGoTo:
+	  { 
+        LinkGoTo *ha = (LinkGoTo *)link;
+        LinkDest *dest = NULL;
+        if (ha->getDest() != NULL)
+            dest = ha->getDest()->copy();
+        else if (ha->getNamedDest() != NULL) {
+            dest = doc->findDest(ha->getNamedDest());
+        }
+            
+        if (dest) { 
+            if (dest->isPageRef()) {
+                Ref pageref = dest->getPageRef();
+                page = doc->findPage(pageref.num, pageref.gen);
+            }
+            else {
+                page = dest->getPageNum();
+            }
+
+            oss << "#" << page
+                << setiosflags(ios::fixed) << setprecision(2)
+                << ":l=" << dest->getLeft() 
+                << "t=" << dest->getTop();
+                //<< "r=" << dest->getRight()
+                //<< "b=" << dest->getBottom();
+            delete dest;
+        }
+        break;
+	  }
+
+      case actionGoToR:
+	  {
+        LinkGoToR *ha = (LinkGoToR *) link;
+        LinkDest *dest = NULL;
+        bool has_file = false;
+        if (ha->getFileName()) {
+            oss << ha->getFileName()->getCString();
+            has_file = true;
+        }
+        if (ha->getDest() != NULL) dest=ha->getDest()->copy();
+
+        if (dest && has_file) {
+            if (!(dest->isPageRef()))  page = dest->getPageNum();
+            delete dest;
+            oss << '#' << page;
+        }
+        break;
+      }
+      case actionURI:
+        { 
+        LinkURI *ha=(LinkURI *) link;
+        oss << ha->getURI()->getCString();
+        break;
+      }
+      case actionLaunch:
+      {
+        LinkLaunch *ha = (LinkLaunch *) link;
+        oss << ha->getFileName()->getCString();
+        break;
+	  }
+      case actionNamed: break;
+      case actionMovie: break;
+      case actionRendition: break;
+      case actionSound: break;
+      case actionJavaScript: break;
+      case actionUnknown: break;
+  }
+  return oss.str();
+}
+
+void XMLOutputDev::process_link(Link* link){
+  double _x1, _y1, _x2, _y2;
+  int x1, y1, x2, y2;
+  
+  link->getRect(&_x1, &_y1, &_x2, &_y2);
+  cvtUserToDev(_x1, _y1, &x1, &y1);
+  
+  cvtUserToDev(_x2, _y2, &x2, &y2); 
+
+  LinkAction *a = link->getAction();
+  if (!a) return;
+  string dest = get_link_dest(a, this->doc);
+  if (dest.length() > 0) {
+      XMLLink *t = new XMLLink((double)x1, (double)y2, (double)x2, (double)y1,
+              dest.c_str());
+      this->current_page->add_link(t); 
+  }
+}
+
+
+void XMLOutputDev::endPage() {
+    Links *slinks = catalog->getPage(current_page->number())->getLinks(catalog);
+    for (int i = 0; i < slinks->getNumLinks(); i++)
+    {
+        this->process_link(slinks->getLink(i));
+    }
+    delete slinks;
+    
+    this->current_page->end();
+    vector<string*> images = this->images->str();
+    for (vector<string*>::iterator it = images.begin(); it < images.end(); it++) {
+        (*this->output) << "\t\t\t" << *(*it) << endl;
+        if (!(*this->output)) throw ReflowException(strerror(errno));
+        delete *it;
+    }
+    this->images->clear();
+    delete this->current_page;
+    this->current_page = NULL;
+}
+
+
+void XMLOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str,
+				  int width, int height, GBool invert,
+				  GBool interpolate, GBool inlineImg) {
+    OutputDev::drawImageMask(state, ref, str, width, height,
+            invert, interpolate, inlineImg);
+    //this->images->add_mask();
+    cerr << "mask requested" << endl;
+}
+
+void XMLOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
+			      int width, int height, GfxImageColorMap *colorMap,
+			      GBool interpolate, int *maskColors, GBool inlineImg) {
+    this->images->add(state, ref, str,
+            static_cast<unsigned int>(width), static_cast<unsigned int>(height),
+            colorMap, interpolate, maskColors, inlineImg);
+}
+
+Reflow::Reflow(char *pdfdata, size_t sz) :
+    pdfdata(pdfdata), current_font_size(-1), doc(NULL)
+{
+    Object obj;
+    obj.initNull();
+    if (globalParams == NULL) {
+        globalParams = new GlobalParams();
+        if (!globalParams)
+            throw ReflowException("Failed to allocate Globalparams");
+    }
+    MemStream *str = new MemStream(pdfdata, 0, sz, &obj);
+    this->doc = new PDFDoc(str, NULL, NULL);
+
+    if (!this->doc->isOk()) {
+        ostringstream stm;
+        stm << "Failed to open PDF file";
+        stm << " with error code: " << doc->getErrorCode();
+        delete this->doc;
+        this->doc = NULL;
+        throw ReflowException(stm.str().c_str());
+    }
+
+}
+
+void
+Reflow::render() {
+    if (this->doc->isEncrypted()) {
+        throw ReflowException("Document is encrypted.");
+    }
+
+    if (!this->doc->okToCopy()) 
+        cout << "Warning, this document has the copy protection flag set, ignoring." << endl;
+
+    char encoding[10] = "UTF-8";
+    globalParams->setTextEncoding(encoding);
+
+    int first_page = 1;
+    int last_page = doc->getNumPages();
+
+    XMLOutputDev *xml_out = new XMLOutputDev(this->doc);
+    doc->displayPages(xml_out, first_page, last_page,
+              96, //hDPI
+              96, //vDPI
+              0, //rotate
+		      true, //UseMediaBox
+              true, //Crop
+              false //Printing
+    );
+    
+    this->dump_outline();
+
+    delete xml_out;
+}
+
+void Reflow::dump_outline() {
+	Outline *outline = this->doc->getOutline();
+    if (!outline) return;
+    GooList *items = outline->getItems();
+    if ( !items || items->getLength() < 1 )
+        return;
+
+    ostringstream *output = new ostringstream();
+    (*output) << "<outline>" << endl;
+    this->outline_level(output, items);
+    (*output) << "</outline>" << endl;
+    ofstream of("outline.xml", ios::trunc);
+    of << output->str();
+    if (!of) throw ReflowException("Error writing outline file");
+    of.close();
+    delete output;
+}
+
+static inline void outline_tabs(ostringstream *o, int level) {
+    for (int i = 0; i < level; i++)
+        (*o) << "\t";
+}
+
+void Reflow::outline_level(ostringstream *oss, GooList *items, int level)
+{
+    int num_of_items = items->getLength();
+    if (num_of_items > 0) {
+        outline_tabs(oss, level);
+        (*oss) << "<links level=\"" << level << "\">" << endl;
+
+        for (int i = 0; i < num_of_items; i++) {
+            OutlineItem* item = (OutlineItem *)items->get(i);
+            Unicode *u = item->getTitle();
+            string title = encode_unicode_chars(u, item->getTitleLength());
+            if (title.size() < 1) continue;
+            outline_tabs(oss, level+1);
+            (*oss) << "<link open=\"" << (item->isOpen()?"yes":"no") << "\"";
+            LinkAction *a = item->getAction();
+            if (a != NULL)
+                (*oss) << " dest=\"" << get_link_dest(a, this->doc) << "\"";
+            (*oss) << ">" << title << "</link>" << endl;
+            item->open();
+            GooList *children = item->getKids();
+            if (children)
+                outline_level(oss, children, level+1);
+        }
+    }
+}
+
+Reflow::~Reflow() {
+    delete this->doc;
+}
+
+map<string, string> Reflow::get_info() {
+    Object info;
+    map<string, string> ans;
+    string val;
+    char encoding[10] = "UTF-8";
+    globalParams->setTextEncoding(encoding);
+
+    this->doc->getDocInfo(&info);
+    if (info.isDict()) {
+        for(size_t i = 0; i < num_info_keys; i++) {
+            val = this->decode_info_string(info.getDict(), info_keys[i]);
+            if (val.size() > 0) {
+                ans[string(info_keys[i])] = string(val);
+            }
+        }
+    }
+    return ans;
+}
+
+string Reflow::decode_info_string(Dict *info, const char *key) const {
+    Object obj;
+    GooString *s1;
+    bool is_unicode;
+    Unicode u;
+    char buf[8];
+    int i, n;
+    ostringstream oss;
+    char *tmp = new char[strlen(key)+1];
+    strcpy(tmp, key);
+    UnicodeMap *umap;
+    if (!(umap = globalParams->getTextEncoding())) {
+        throw ReflowException("Failed to allocate unicode map.");
+    }
+
+
+    if (info->lookup(tmp, &obj)->isString()) {
+        s1 = obj.getString();
+        if ((s1->getChar(0) & 0xff) == 0xfe &&
+        (s1->getChar(1) & 0xff) == 0xff) {
+            is_unicode = true;
+            i = 2;
+        } else {
+            is_unicode = false;
+            i = 0;
+        }
+        while (i < obj.getString()->getLength()) {
+            if (is_unicode) {
+                u = ((s1->getChar(i) & 0xff) << 8) |
+                (s1->getChar(i+1) & 0xff);
+                i += 2;
+            } else {
+                u = pdfDocEncoding[s1->getChar(i) & 0xff];
+                ++i;
+            }
+            n = umap->mapUnicode(u, buf, sizeof(buf));
+            buf[n] = 0;
+            oss << buf;
+        }
+    }
+    obj.free();
+    delete[] tmp;
+    return oss.str();
+}
+
+char* Reflow::render_first_page(size_t *data_size,
+        bool use_crop_box, double x_res,
+        double y_res) {
+    if (this->is_locked()) throw ReflowException("Document is locked.");
+    char encoding[10] = "UTF-8";
+    char yes[10] = "yes";
+    globalParams->setTextEncoding(encoding);
+    globalParams->setEnableFreeType(yes);
+    globalParams->setAntialias(yes);
+    globalParams->setVectorAntialias(yes);
+    
+    SplashColor paper_color;
+    paper_color[0] = 255;
+    paper_color[1] = 255;
+    paper_color[2] = 255;
+    SplashOutputDev *out = new SplashOutputDev(splashModeRGB8, 4, false, paper_color);
+    if (!out) {
+        throw ReflowException("Failed to allocate SplashOutputDev");
+    }
+    out->startDoc(doc->getXRef());
+
+    double pg_w, pg_h;
+    int pg = 1;
+
+    if (use_crop_box) {
+        pg_w = this->doc->getPageCropWidth(pg);
+        pg_h = this->doc->getPageCropHeight(pg);
+    } else {
+        pg_w = this->doc->getPageMediaWidth(pg);
+        pg_h = this->doc->getPageMediaHeight(pg);
+    }
+
+    pg_w *= x_res/72.;
+    pg_h *= x_res/72.;
+
+    int x=0, y=0;
+    this->doc->displayPageSlice(out, pg, x_res, y_res, 0,
+            !use_crop_box, false, false, x, y, pg_w, pg_h);
+
+    FILE * f = tmpfile();
+    if (!f) throw ReflowException(strerror(errno));
+    SplashBitmap *bmp = out->getBitmap();
+    PNGWriter *writer = new PNGWriter();
+    writer->init(f, bmp->getWidth(), bmp->getHeight()); 
+    writer->write_splash_bitmap(bmp);
+    writer->close();
+    delete writer;
+
+
+    long size = ftell(f);
+    rewind(f);
+    char *buffer = new char[size];
+    *data_size = fread(buffer, 1, size, f);
+    if (*data_size != (size_t)size) {
+        throw ReflowException("I/O error reading from tmpfile");
+    }
+    return buffer;
+}

src/calibre/ebooks/pdf/reflow.h

@@ -0,0 +1,238 @@
+/**
+ * Copyright 2009 Kovid Goyal <kovid@kovidgoyal.net>
+ * License: GNU GPL v3
+ * Based on pdftohtml from the poppler project.
+ */
+
+#ifndef CALIBRE_REFLOW
+#define CALIBRE_REFLOW
+#define UNICODE
+
+#include <PDFDoc.h>
+#include <GlobalParams.h>
+#include <GfxState.h>
+#include <GfxFont.h>
+#include <OutputDev.h>
+#include <Link.h>
+#include <UnicodeMap.h>
+#include <cmath>
+#include <exception>
+#include <string>
+#include <sstream>
+#include <vector>
+#include <iostream>
+#include <algorithm>
+#include <fstream>
+#include <iostream>
+#include <iomanip>
+#include <map>
+#include <errno.h>
+#include "fonts.h"
+#include "links.h"
+#include "images.h"
+
+using namespace std;
+
+namespace calibre_reflow {
+
+
+enum UnicodeTextDirection {
+  text_dir_unknown,
+  text_dir_left_right,
+  text_dir_right_left,
+  text_dir_top_bottom
+};
+
+class Reflow {
+
+    private:
+        char *pdfdata;
+        double current_font_size;
+        PDFDoc *doc;
+
+        string decode_info_string(Dict *info, const char *key) const;
+        void outline_level(ostringstream *oss, GooList *items,
+                            int level=1);
+
+    public:
+        Reflow (char *xpdfdata, size_t sz);
+        ~Reflow();
+        
+        /* Convert the PDF to XML. All files are output to the current directory */
+        void render();
+
+        /* Get the PDF Info Dictionary */
+        map<string, string> get_info();
+
+        /* True if the PDF is encrypted */
+        bool is_locked() const { return !this->doc || this->doc->isEncrypted(); }
+
+        /* Return the first page of the PDF, rendered as a PNG image */
+        char* render_first_page(size_t *data_size,
+            bool use_crop_box=true, double x_res=150.0,
+            double y_res = 150.0);
+
+        /* Dump the PDF outline as the file outline.xml in the current directory */
+        void dump_outline();
+};
+
+class XMLString {
+    private:
+        vector<Unicode> *text;  // the text
+        vector<double> *x_right; // right-hand x coord of each char
+        XMLString *yx_next;	    	// next string in y-major order
+        XMLString *xy_next;		    // next string in x-major order
+        Fonts *fonts;
+        Fonts::size_type font_idx;
+        string *xml_text;
+        XMLLink *link;
+
+        double x_min, x_max;		// bounding box x coordinates
+        double y_min, y_max;		// bounding box y coordinates
+        int col;		        	// starting column
+        UnicodeTextDirection dir;	// direction (left to right/right to left)
+
+        friend class XMLPage;
+
+    public:
+        XMLString(GfxState *state, GooString *s, double current_font_size, Fonts *fonts);
+        ~XMLString();
+
+        bool character_does_not_belong_to_string(GfxState *state, double x1) {
+            return this->length() > 0 && 
+                fabs(x1 - x_right->at(this->length()-1)) > 0.1 * (y_max - y_min);
+        }
+        
+        void add_char(GfxState *state, double x, double y,
+            	       double dx, double dy, Unicode u);
+
+        void end_string();
+        inline int length() const { return this->text->size(); }
+        inline double height() const { return y_max - y_min; }
+        void encode();
+        XMLLink* get_link() { return this->link; }
+        string str() const;
+};
+
+class XMLPage {
+    private:
+        XMLString *current_string;
+        unsigned int num;
+        ofstream *output;
+        double current_font_size;
+        XMLString *yx_strings;	// strings in y-major order
+        XMLString *xy_strings;	// strings in x-major order
+        XMLString *yx_cur1, *yx_cur2;	// cursors for yxStrings list
+        Fonts *fonts;
+        XMLLinks *links;
+        void coalesce();
+
+    public:
+        XMLPage(unsigned int num, GfxState *state, ofstream *output, Fonts* fonts);
+        ~XMLPage();
+
+        void update_font(GfxState *state);
+
+        void begin_string(GfxState *state, GooString *s) {
+            this->current_string = new XMLString(state, s,
+                    this->current_font_size, this->fonts);
+        }
+        
+        void draw_char(GfxState *state, double x, double y,
+                double dx, double dy,
+                double originX, double originY,
+                CharCode code, int nBytes, Unicode *u, int uLen);
+
+        void end_string();
+
+        void end();
+
+        void add_link(XMLLink *t) { this->links->push_back(t); }
+
+        unsigned int number() const { return this->num; }
+};
+
+class XMLOutputDev : public OutputDev {
+  public:
+    XMLOutputDev(PDFDoc *doc);
+    virtual ~XMLOutputDev();
+    //---- get info about output device
+
+    // Does this device use upside-down coordinates?
+    // (Upside-down means (0,0) is the top left corner of the page.)
+    virtual GBool upsideDown() { return gTrue; }
+
+    // Does this device use drawChar() or drawString()?
+    virtual GBool useDrawChar() { return gTrue; }
+
+    // Does this device use beginType3Char/endType3Char?  Otherwise,
+    // text in Type 3 fonts will be drawn with drawChar/drawString.
+    virtual GBool interpretType3Chars() { return gFalse; }
+
+    // Does this device need non-text content?
+    virtual GBool needNonText() { return gTrue; }
+
+    //----- initialization and control
+
+    virtual GBool checkPageSlice(Page *page, double hDPI, double vDPI,
+                                int rotate, GBool useMediaBox, GBool crop,
+                                int sliceX, int sliceY, int sliceW, int sliceH,
+                                GBool printing, Catalog * catalogA,
+                                GBool (* abortCheckCbk)(void *data) = NULL,
+                                void * abortCheckCbkData = NULL)
+    {
+    this->catalog = catalogA;
+    return gTrue;
+    }
+
+
+    // Start a page.
+    virtual void startPage(int page_num, GfxState *state) {
+        this->current_page = new XMLPage(page_num, state, this->output, this->fonts);
+    }
+
+
+    // End a page.
+    virtual void endPage();
+
+    //----- update text state
+    virtual void updateFont(GfxState *state) {current_page->update_font(state);}
+
+    //----- text drawing
+    virtual void beginString(GfxState *state, GooString *s) {
+        this->current_page->begin_string(state, s);
+    }
+    virtual void endString(GfxState *state) {
+        this->current_page->end_string();
+    }
+    virtual void drawChar(GfxState *state, double x, double y,
+                double dx, double dy,
+                double originX, double originY,
+                CharCode code, int nBytes, Unicode *u, int uLen) {
+        this->current_page->draw_char(state, x, y, dx, dy, originX,
+                originY, code, nBytes, u, uLen);
+    }
+    
+    virtual void drawImageMask(GfxState *state, Object *ref, 
+                    Stream *str,
+                    int width, int height, GBool invert,
+                    GBool interpolate, GBool inlineImg);
+    virtual void drawImage(GfxState *state, Object *ref, Stream *str,
+                int width, int height, GfxImageColorMap *colorMap,
+                GBool interpolate, int *maskColors, GBool inlineImg);
+
+    //new feature    
+    virtual int DevType() {return 1234;}
+
+  private:
+    XMLPage *current_page;
+    ofstream *output;                   // xml file
+    Fonts *fonts;
+    Catalog *catalog;
+    XMLImages *images;
+    PDFDoc *doc;
+
+    void process_link(Link* link);
+};
+}
+#endif

src/calibre/ebooks/pdf/reflow.py

@@ -0,0 +1,127 @@
+#!/usr/bin/env python
+# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:ai
+from __future__ import with_statement
+
+__license__   = 'GPL v3'
+__copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
+__docformat__ = 'restructuredtext en'
+
+import sys, os
+from copy import deepcopy
+
+from lxml import etree
+
+class Font(object):
+
+    def __init__(self, spec):
+        self.id = spec.get('id')
+        self.size = float(spec.get('size'))
+        self.color = spec.get('color')
+        self.family = spec.get('family')
+
+class Text(object):
+
+    A = etree.XPath('descendant::a[@href]')
+
+    def __init__(self, text, font_map, classes, opts, log):
+        self.opts, self.log = opts, log
+        self.font_map = font_map
+        self.top, self.left, self.width, self.height = map(float, map(text.get,
+            ('top', 'left', 'width', 'height')))
+        self.font = self.font_map[text.get('font')]
+        self.font_size = self.font.size
+        self.color = self.font.color
+        self.font_family = self.font.family
+
+        for a in self.A(text):
+            href = a.get('href')
+            if href.startswith('index.'):
+                href = href.split('#')[-1]
+                a.set('href', '#page'+href)
+
+        self.text = etree.Element('span')
+        css = {'font_size':'%.1fpt'%self.font_size, 'color': self.color}
+        if css not in classes:
+            classes.append(css)
+        idx = classes.index(css)
+        self.text.set('class', 't%d'%idx)
+        if text.text:
+            self.text.text = text.text
+        for x in text:
+            self.text.append(deepcopy(x))
+        #print etree.tostring(self.text, encoding='utf-8', with_tail=False)
+
+class Page(object):
+
+    def __init__(self, page, font_map, classes, opts, log):
+        self.opts, self.log = opts, log
+        self.font_map = font_map
+        self.number = int(page.get('number'))
+        self.top, self.left, self.width, self.height = map(float, map(page.get,
+            ('top', 'left', 'width', 'height')))
+        self.id = 'page%d'%self.number
+
+        self.texts = []
+
+        for text in page.xpath('descendant::text'):
+            self.texts.append(Text(text, self.font_map, classes, self.opts, self.log))
+
+
+class PDFDocument(object):
+
+    def __init__(self, xml, opts, log):
+        self.opts, self.log = opts, log
+        parser = etree.XMLParser(recover=True)
+        self.root = etree.fromstring(xml, parser=parser)
+
+        self.fonts = []
+        self.font_map = {}
+
+        for spec in self.root.xpath('//fontspec'):
+            self.fonts.append(Font(spec))
+            self.font_map[self.fonts[-1].id] = self.fonts[-1]
+
+        self.pages = []
+        self.page_map = {}
+
+        self.classes = []
+
+        for page in self.root.xpath('//page'):
+            page = Page(page, self.font_map, self.classes, opts, log)
+            self.page_map[page.id] = page
+            self.pages.append(page)
+
+
+
+
+def run(opts, pathtopdf, log):
+    from calibre.constants import plugins
+    pdfreflow, err = plugins['pdfreflow']
+    if pdfreflow is None:
+        raise RuntimeError('Failed to load PDF Reflow plugin: '+err)
+    data = open(pathtopdf, 'rb').read()
+    pdfreflow.reflow(data)
+    index = os.path.join(os.getcwdu(), 'index.xml')
+    xml = open(index, 'rb').read()
+    #pdfdoc = PDFDocument(xml, opts, log)
+
+def option_parser():
+    from optparse import OptionParser
+    p = OptionParser()
+    p.add_option('-v', '--verbose', action='count', default=0)
+    return p
+
+def main(args=sys.argv):
+    p = option_parser()
+    opts, args = p.parse_args(args)
+    from calibre.utils.logging import default_log
+
+    if len(args) < 2:
+        p.print_help()
+        default_log('No input PDF file specified', file=sys.stderr)
+        return 1
+
+
+    run(opts, args[1], default_log)
+
+    return 0

src/calibre/ebooks/pdf/utils.h

@@ -0,0 +1,48 @@
+/**
+ * Copyright 2009 Kovid Goyal <kovid@kovidgoyal.net>
+ * License: GNU GPL v3
+ */
+
+
+#ifndef _CALIBRE_REFLOW_UTILS
+#define _CALIBRE_REFLOW_UTILS
+
+#include <string>
+#include <sstream>
+
+using namespace std;
+
+namespace calibre_reflow {
+
+    class ReflowException : public exception {
+        const char *msg;
+        public:
+            ReflowException(const char *m) : msg(m) {}
+            virtual const char* what() const throw() { return msg; }
+    };
+
+inline string encode_for_xml(const string &sSrc )
+{
+    ostringstream sRet;
+
+    for( string::const_iterator iter = sSrc.begin(); iter!=sSrc.end(); iter++ )
+    {
+        unsigned char c = (unsigned char)*iter;
+
+        switch( c )
+        {
+            case '&': sRet << "&amp;"; break;
+            case '<': sRet << "&lt;"; break;
+            case '>': sRet << "&gt;"; break;
+            case '"': sRet << "&quot;"; break;
+
+            default: sRet << c;
+        }
+    }
+
+    return sRet.str();
+}
+
+
+}
+#endif