source: branches/branch-1.4/zoo-project/zoo-services/qrencode/qrenc-service.c @ 822

/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: t -*-*/

/**
 * qrencode - QR Code encoder
 *
 * QR Code encoding tool
 * Copyright (C) 2006-2012 Kentaro Fukuchi <kentaro@fukuchi.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <png.h>
#include <getopt.h>

#ifdef ZOO_SERVICE_PROVIDER
#define bzero(b,len) (memset((b), '\0', (len)), (void) 0)
#define bcopy(b1,b2,len) (memmove((b2), (b1), (len)), (void) 0)
#ifdef WIN32
#include "windows.h"
#endif
#include "service.h"
#include <sys/stat.h>
#include <unistd.h>
#endif

#include "qrencode.h"

#define INCHES_PER_METER (100.0/2.54)

static int casesensitive = 1;
static int eightbit = 0;
static int version = 0;
static int size = 3;
static int margin = -1;
static int dpi = 72;
static int structured = 0;
static int micro = 0;
static QRecLevel level = QR_ECLEVEL_L;
static QRencodeMode hint = QR_MODE_8;
static unsigned int fg_color[4] = {0, 0, 0, 255};
static unsigned int bg_color[4] = {255, 255, 255, 255};

enum imageType {
        PNG_TYPE,
        EPS_TYPE,
        SVG_TYPE,
        ANSI_TYPE,
        ANSI256_TYPE,
        ASCII_TYPE,
        ASCIIi_TYPE,
        UTF8_TYPE,
        ANSIUTF8_TYPE
};

static enum imageType image_type = PNG_TYPE;

static const struct option options[] = {
        {"help"         , no_argument      , NULL, 'h'},
        {"output"       , required_argument, NULL, 'o'},
        {"level"        , required_argument, NULL, 'l'},
        {"size"         , required_argument, NULL, 's'},
        {"symversion"   , required_argument, NULL, 'v'},
        {"margin"       , required_argument, NULL, 'm'},
        {"dpi"          , required_argument, NULL, 'd'},
        {"type"         , required_argument, NULL, 't'},
        {"structured"   , no_argument      , NULL, 'S'},
        {"kanji"        , no_argument      , NULL, 'k'},
        {"casesensitive", no_argument      , NULL, 'c'},
        {"ignorecase"   , no_argument      , NULL, 'i'},
        {"8bit"         , no_argument      , NULL, '8'},
        {"micro"        , no_argument      , NULL, 'M'},
        {"foreground"   , required_argument, NULL, 'f'},
        {"background"   , required_argument, NULL, 'b'},
        {"version"      , no_argument      , NULL, 'V'},
        {NULL, 0, NULL, 0}
};

static char *optstring = "ho:l:s:v:m:d:t:Skci8MV";

static void usage(int help, int longopt)
{
        fprintf(stderr,
"qrencode version %s\n"
"Copyright (C) 2006-2012 Kentaro Fukuchi\n", QRcode_APIVersionString());
        if(help) {
                if(longopt) {
                        fprintf(stderr,
"Usage: qrencode [OPTION]... [STRING]\n"
"Encode input data in a QR Code and save as a PNG or EPS image.\n\n"
"  -h, --help   display the help message. -h displays only the help of short\n"
"               options.\n\n"
"  -o FILENAME, --output=FILENAME\n"
"               write image to FILENAME. If '-' is specified, the result\n"
"               will be output to standard output. If -S is given, structured\n"
"               symbols are written to FILENAME-01.png, FILENAME-02.png, ...\n"
"               (suffix is removed from FILENAME, if specified)\n"
"  -s NUMBER, --size=NUMBER\n"
"               specify module size in dots (pixels). (default=3)\n\n"
"  -l {LMQH}, --level={LMQH}\n"
"               specify error correction level from L (lowest) to H (highest).\n"
"               (default=L)\n\n"
"  -v NUMBER, --symversion=NUMBER\n"
"               specify the version of the symbol. (default=auto)\n\n"
"  -m NUMBER, --margin=NUMBER\n"
"               specify the width of the margins. (default=4 (2 for Micro)))\n\n"
"  -d NUMBER, --dpi=NUMBER\n"
"               specify the DPI of the generated PNG. (default=72)\n\n"
"  -t {PNG,EPS,SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}, --type={PNG,EPS,\n"
"               SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}\n"
"               specify the type of the generated image. (default=PNG)\n\n"
"  -S, --structured\n"
"               make structured symbols. Version must be specified.\n\n"
"  -k, --kanji  assume that the input text contains kanji (shift-jis).\n\n"
"  -c, --casesensitive\n"
"               encode lower-case alphabet characters in 8-bit mode. (default)\n\n"
"  -i, --ignorecase\n"
"               ignore case distinctions and use only upper-case characters.\n\n"
"  -8, --8bit   encode entire data in 8-bit mode. -k, -c and -i will be ignored.\n\n"
"  -M, --micro  encode in a Micro QR Code. (experimental)\n\n"
"  --foreground=RRGGBB[AA]\n"
"  --background=RRGGBB[AA]\n"
"               specify foreground/background color in hexadecimal notation.\n"
"               6-digit (RGB) or 8-digit (RGBA) form are supported.\n"
"               Color output support available only in PNG and SVG.\n"
"  -V, --version\n"
"               display the version number and copyrights of the qrencode.\n\n"
"  [STRING]     input data. If it is not specified, data will be taken from\n"
"               standard input.\n"
                        );
                } else {
                        fprintf(stderr,
"Usage: qrencode [OPTION]... [STRING]\n"
"Encode input data in a QR Code and save as a PNG or EPS image.\n\n"
"  -h           display this message.\n"
"  --help       display the usage of long options.\n"
"  -o FILENAME  write image to FILENAME. If '-' is specified, the result\n"
"               will be output to standard output. If -S is given, structured\n"
"               symbols are written to FILENAME-01.png, FILENAME-02.png, ...\n"
"               (suffix is removed from FILENAME, if specified)\n"
"  -s NUMBER    specify module size in dots (pixels). (default=3)\n"
"  -l {LMQH}    specify error correction level from L (lowest) to H (highest).\n"
"               (default=L)\n"
"  -v NUMBER    specify the version of the symbol. (default=auto)\n"
"  -m NUMBER    specify the width of the margins. (default=4 (2 for Micro))\n"
"  -d NUMBER    specify the DPI of the generated PNG. (default=72)\n"
"  -t {PNG,EPS,SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}\n"
"               specify the type of the generated image. (default=PNG)\n"
"  -S           make structured symbols. Version must be specified.\n"
"  -k           assume that the input text contains kanji (shift-jis).\n"
"  -c           encode lower-case alphabet characters in 8-bit mode. (default)\n"
"  -i           ignore case distinctions and use only upper-case characters.\n"
"  -8           encode entire data in 8-bit mode. -k, -c and -i will be ignored.\n"
"  -M           encode in a Micro QR Code.\n"
"  --foreground=RRGGBB[AA]\n"
"  --background=RRGGBB[AA]\n"
"               specify foreground/background color in hexadecimal notation.\n"
"               6-digit (RGB) or 8-digit (RGBA) form are supported.\n"
"               Color output support available only in PNG and SVG.\n"
"  -V           display the version number and copyrights of the qrencode.\n"
"  [STRING]     input data. If it is not specified, data will be taken from\n"
"               standard input.\n"
                        );
                }
        }
}

static int color_set(unsigned int color[4], const char *value)
{
        int len = strlen(value);
        int count;
        if(len == 6) {
                count = sscanf(value, "%02x%02x%02x%n", &color[0], &color[1], &color[2], &len);
                if(count < 3 || len != 6) {
                        return -1;
                }
                color[3] = 255;
        } else if(len == 8) {
                count = sscanf(value, "%02x%02x%02x%02x%n", &color[0], &color[1], &color[2], &color[3], &len);
                if(count < 4 || len != 8) {
                        return -1;
                }
        } else {
                return -1;
        }
        return 0;
}

#define MAX_DATA_SIZE (7090 * 16) /* from the specification */
static unsigned char *readStdin(int *length)
{
        unsigned char *buffer;
        int ret;

        buffer = (unsigned char *)malloc(MAX_DATA_SIZE + 1);
        if(buffer == NULL) {
                fprintf(stderr, "Memory allocation failed.\n");
                exit(EXIT_FAILURE);
        }
        ret = fread(buffer, 1, MAX_DATA_SIZE, stdin);
        if(ret == 0) {
                fprintf(stderr, "No input data.\n");
                exit(EXIT_FAILURE);
        }
        if(feof(stdin) == 0) {
                fprintf(stderr, "Input data is too large.\n");
                exit(EXIT_FAILURE);
        }

        buffer[ret] = '\0';
        *length = ret;

        return buffer;
}

static FILE *openFile(const char *outfile)
{
        FILE *fp;

        if(outfile == NULL || (outfile[0] == '-' && outfile[1] == '\0')) {
                fp = stdout;
        } else {
                fp = fopen(outfile, "wb");
                if(fp == NULL) {
                        fprintf(stderr, "Failed to create file: %s\n", outfile);
                        perror(NULL);
                        exit(EXIT_FAILURE);
                }
        }

        return fp;
}

static int writePNG(QRcode *qrcode, const char *outfile)
{
        static FILE *fp; // avoid clobbering by setjmp.
        png_structp png_ptr;
        png_infop info_ptr;
        png_colorp palette;
        png_byte alpha_values[2];
        unsigned char *row, *p, *q;
        int x, y, xx, yy, bit;
        int realwidth;

        realwidth = (qrcode->width + margin * 2) * size;
        row = (unsigned char *)malloc((realwidth + 7) / 8);
        if(row == NULL) {
                fprintf(stderr, "Failed to allocate memory.\n");
                exit(EXIT_FAILURE);
        }

        if(outfile[0] == '-' && outfile[1] == '\0') {
                fp = stdout;
        } else {
                fp = fopen(outfile, "wb");
                if(fp == NULL) {
                        fprintf(stderr, "Failed to create file: %s\n", outfile);
                        perror(NULL);
                        exit(EXIT_FAILURE);
                }
        }

        png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
        if(png_ptr == NULL) {
                fprintf(stderr, "Failed to initialize PNG writer.\n");
                exit(EXIT_FAILURE);
        }

        info_ptr = png_create_info_struct(png_ptr);
        if(info_ptr == NULL) {
                fprintf(stderr, "Failed to initialize PNG write.\n");
                exit(EXIT_FAILURE);
        }

        if(setjmp(png_jmpbuf(png_ptr))) {
                png_destroy_write_struct(&png_ptr, &info_ptr);
                fprintf(stderr, "Failed to write PNG image.\n");
                exit(EXIT_FAILURE);
        }

        palette = (png_colorp) malloc(sizeof(png_color) * 2);
        palette[0].red   = fg_color[0];
        palette[0].green = fg_color[1];
        palette[0].blue  = fg_color[2];
        palette[1].red   = bg_color[0];
        palette[1].green = bg_color[1];
        palette[1].blue  = bg_color[2];
        alpha_values[0] = fg_color[3];
        alpha_values[1] = bg_color[3];
        png_set_PLTE(png_ptr, info_ptr, palette, 2);
        png_set_tRNS(png_ptr, info_ptr, alpha_values, 2, NULL);

        png_init_io(png_ptr, fp);
        png_set_IHDR(png_ptr, info_ptr,
                        realwidth, realwidth,
                        1,
                        PNG_COLOR_TYPE_PALETTE,
                        PNG_INTERLACE_NONE,
                        PNG_COMPRESSION_TYPE_DEFAULT,
                        PNG_FILTER_TYPE_DEFAULT);
        png_set_pHYs(png_ptr, info_ptr,
                        dpi * INCHES_PER_METER,
                        dpi * INCHES_PER_METER,
                        PNG_RESOLUTION_METER);
        png_write_info(png_ptr, info_ptr);

        /* top margin */
        memset(row, 0xff, (realwidth + 7) / 8);
        for(y=0; y<margin * size; y++) {
                png_write_row(png_ptr, row);
        }

        /* data */
        p = qrcode->data;
        for(y=0; y<qrcode->width; y++) {
                bit = 7;
                memset(row, 0xff, (realwidth + 7) / 8);
                q = row;
                q += margin * size / 8;
                bit = 7 - (margin * size % 8);
                for(x=0; x<qrcode->width; x++) {
                        for(xx=0; xx<size; xx++) {
                                *q ^= (*p & 1) << bit;
                                bit--;
                                if(bit < 0) {
                                        q++;
                                        bit = 7;
                                }
                        }
                        p++;
                }
                for(yy=0; yy<size; yy++) {
                        png_write_row(png_ptr, row);
                }
        }
        /* bottom margin */
        memset(row, 0xff, (realwidth + 7) / 8);
        for(y=0; y<margin * size; y++) {
                png_write_row(png_ptr, row);
        }

        png_write_end(png_ptr, info_ptr);
        png_destroy_write_struct(&png_ptr, &info_ptr);

        fclose(fp);
        free(row);

        return 0;
}

static int writeEPS(QRcode *qrcode, const char *outfile)
{
        FILE *fp;
        unsigned char *row, *p;
        int x, y, yy;
        int realwidth;

        fp = openFile(outfile);
   
        realwidth = (qrcode->width + margin * 2) * size;
        /* EPS file header */
        fprintf(fp, "%%!PS-Adobe-2.0 EPSF-1.2\n"
                                "%%%%BoundingBox: 0 0 %d %d\n"
                                "%%%%Pages: 1 1\n"
                                "%%%%EndComments\n", realwidth, realwidth);
        /* draw point */
        fprintf(fp, "/p { "
                                "moveto "
                                "0 1 rlineto "
                                "1 0 rlineto "
                                "0 -1 rlineto "
                                "fill "
                                "} bind def "
                                "%d %d scale ", size, size);
        
        /* data */
        p = qrcode->data;
        for(y=0; y<qrcode->width; y++) {
                row = (p+(y*qrcode->width));
                yy = (margin + qrcode->width - y - 1);
                
                for(x=0; x<qrcode->width; x++) {
                        if(*(row+x)&0x1) {
                                fprintf(fp, "%d %d p ", margin + x,  yy);
                        }
                }
        }

        fprintf(fp, "\n%%%%EOF\n");
        fclose(fp);

        return 0;
}

static void writeSVG_writeRect(FILE *fp, int x, int y, int width, char* col, float opacity)
{
        if(fg_color[3] != 255) {
                fprintf(fp, "\t\t\t<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"1\" "\
                                "fill=\"#%s\" fill-opacity=\"%f\" />\n", 
                                x, y, width, col, opacity );
        } else {
                fprintf(fp, "\t\t\t<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"1\" "\
                                "fill=\"#%s\" />\n", 
                                x, y, width, col );
        }
}

static int writeSVG( QRcode *qrcode, const char *outfile )
{
        FILE *fp;
        unsigned char *row, *p;
        int x, y, x0, pen;
        int symwidth, realwidth;
        float scale;
        char fg[7], bg[7];
        float fg_opacity;
        float bg_opacity;

        fp = openFile(outfile);

        scale = dpi * INCHES_PER_METER / 100.0;

        symwidth = qrcode->width + margin * 2;
        realwidth = symwidth * size;

        snprintf(fg, 7, "%02x%02x%02x", fg_color[0], fg_color[1],  fg_color[2]);
        snprintf(bg, 7, "%02x%02x%02x", bg_color[0], bg_color[1],  bg_color[2]);
        fg_opacity = (float)fg_color[3] / 255;
        bg_opacity = (float)bg_color[3] / 255;

        /* XML declaration */
        fputs( "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n", fp );

        /* DTD 
           No document type specified because "while a DTD is provided in [the SVG] 
           specification, the use of DTDs for validating XML documents is known to be 
           problematic. In particular, DTDs do not handle namespaces gracefully. It 
           is *not* recommended that a DOCTYPE declaration be included in SVG 
           documents." 
           http://www.w3.org/TR/2003/REC-SVG11-20030114/intro.html#Namespace
        */

        /* Vanity remark */
        fprintf( fp, "<!-- Created with qrencode %s (http://fukuchi.org/works/qrencode/index.html.en) -->\n", 
                        QRcode_APIVersionString() );

        /* SVG code start */
        fprintf( fp, "<svg width=\"%0.2fcm\" height=\"%0.2fcm\" viewBox=\"0 0 %d %d\""\
                        " preserveAspectRatio=\"none\" version=\"1.1\""\
                        " xmlns=\"http://www.w3.org/2000/svg\">\n", 
                        realwidth / scale, realwidth / scale, symwidth, symwidth
                   );

        /* Make named group */
        fputs( "\t<g id=\"QRcode\">\n", fp );

        /* Make solid background */
        if(bg_color[3] != 255) {
                fprintf(fp, "\t\t<rect x=\"0\" y=\"0\" width=\"%d\" height=\"%d\" fill=\"#%s\" fill-opacity=\"%f\" />\n", symwidth, symwidth, bg, bg_opacity);
        } else {
                fprintf(fp, "\t\t<rect x=\"0\" y=\"0\" width=\"%d\" height=\"%d\" fill=\"#%s\" />\n", symwidth, symwidth, bg);
        }

        /* Create new viewbox for QR data */
        fputs( "\t\t<g id=\"Pattern\">\n", fp);

        /* Write data */
        p = qrcode->data;
        for(y=0; y<qrcode->width; y++) {
                row = (p+(y*qrcode->width));

                /* simple RLE */
                pen = 0;
                x0  = 0;
                for(x=0; x<qrcode->width; x++) {
                        if( !pen ) {
                                pen = *(row+x)&0x1;
                                x0 = x;
                        } else {
                                if(!(*(row+x)&0x1)) {
                                        writeSVG_writeRect(fp, x0 + margin, y + margin, x-x0, fg, fg_opacity);
                                        pen = 0;
                                }
                        }
                }
                if( pen ) {
                        writeSVG_writeRect(fp, x0 + margin, y + margin, qrcode->width - x0, fg, fg_opacity);
                }
        }

        /* Close QR data viewbox */
        fputs( "\t\t</g>\n", fp );

        /* Close group */
        fputs( "\t</g>\n", fp );

        /* Close SVG code */
        fputs( "</svg>\n", fp );
        fclose( fp );

        return 0;
}

static void writeANSI_margin(FILE* fp, int realwidth,
                             char* buffer, int buffer_s,
                             char* white, int white_s )
{
        int y;

        strncpy(buffer, white, white_s);
        memset(buffer + white_s, ' ', realwidth * 2);
        strcpy(buffer + white_s + realwidth * 2, "\033[0m\n"); // reset to default colors
        for(y=0; y<margin; y++ ){
                fputs(buffer, fp);
        }
}

static int writeANSI(QRcode *qrcode, const char *outfile)
{
        FILE *fp;
        unsigned char *row, *p;
        int x, y;
        int realwidth;
        int last;

        char *white, *black, *buffer;
        int white_s, black_s, buffer_s;

        if( image_type == ANSI256_TYPE ){
                /* codes for 256 color compatible terminals */
                white = "\033[48;5;231m";
                white_s = 11;
                black = "\033[48;5;16m";
                black_s = 10;
        } else {
                white = "\033[47m";
                white_s = 5;
                black = "\033[40m";
                black_s = 5;
        }

        size = 1;

        fp = openFile(outfile);

        realwidth = (qrcode->width + margin * 2) * size;
        buffer_s = ( realwidth * white_s ) * 2;
        buffer = (char *)malloc( buffer_s );
        if(buffer == NULL) {
                fprintf(stderr, "Failed to allocate memory.\n");
                exit(EXIT_FAILURE);
        }

        /* top margin */
        writeANSI_margin(fp, realwidth, buffer, buffer_s, white, white_s);

        /* data */
        p = qrcode->data;
        for(y=0; y<qrcode->width; y++) {
                row = (p+(y*qrcode->width));

                bzero( buffer, buffer_s );
                strncpy( buffer, white, white_s );
                for(x=0; x<margin; x++ ){
                        strncat( buffer, "  ", 2 );
                }
                last = 0;

                for(x=0; x<qrcode->width; x++) {
                        if(*(row+x)&0x1) {
                                if( last != 1 ){
                                        strncat( buffer, black, black_s );
                                        last = 1;
                                }
                        } else {
                                if( last != 0 ){
                                        strncat( buffer, white, white_s );
                                        last = 0;
                                }
                        }
                        strncat( buffer, "  ", 2 );
                }

                if( last != 0 ){
                        strncat( buffer, white, white_s );
                }
                for(x=0; x<margin; x++ ){
                        strncat( buffer, "  ", 2 );
                }
                strncat( buffer, "\033[0m\n", 5 );
                fputs( buffer, fp );
        }

        /* bottom margin */
        writeANSI_margin(fp, realwidth, buffer, buffer_s, white, white_s);

        fclose(fp);
        free(buffer);

        return 0;
}

static void writeUTF8_margin(FILE* fp, int realwidth,
                             const char* white, const char *reset,
                             int use_ansi)
{
        int x, y;

        for (y = 0; y < margin/2; y++) {
                fputs(white, fp);
                for (x = 0; x < realwidth; x++)
                        fputs("\342\226\210", fp);
                fputs(reset, fp);
                fputc('\n', fp);
        }
}

static int writeUTF8(QRcode *qrcode, const char *outfile, int use_ansi)
{
        FILE *fp;
        int x, y;
        int realwidth;
        unsigned char *p;
        const char *white, *reset;

        if (use_ansi){
                white = "\033[40;37;1m";
                reset = "\033[0m";
        } else {
                white = "";
                reset = "";
        }

        fp = openFile(outfile);

        realwidth = (qrcode->width + margin * 2);

        /* top margin */
        writeUTF8_margin(fp, realwidth, white, reset, use_ansi);

        /* data */
        p = qrcode->data;
        for(y = 0; y < qrcode->width; y += 2) {
                unsigned char *row1, *row2;
                row1 = p + y*qrcode->width;
                row2 = p + y*qrcode->width + qrcode->width;

                fputs(white, fp);

                for (x = 0; x < margin; x++)
                        fputs("\342\226\210", fp);

                for (x = 0; x < qrcode->width; x++) {
                        if ((*(row1 + x) & 1) && (*(row2 + x) & 1))
                                fputc(' ', fp);
                        else if (*(row1 + x) & 1)
                                fputs("\342\226\204", fp);
                        else if (*(row2 + x) & 1)
                                fputs("\342\226\200", fp);
                        else
                                fputs("\342\226\210", fp);
                }

                for (x = 0; x < margin; x++)
                        fputs("\342\226\210", fp);

                fputs(reset, fp);
                fputc('\n', fp);
        }

        /* bottom margin */
        writeUTF8_margin(fp, realwidth, white, reset, use_ansi);

        fclose(fp);

        return 0;
}

static void writeASCII_margin(FILE* fp, int realwidth, char* buffer, int buffer_s, int invert)
{
        int y, h;

        h = margin;

        memset(buffer, (invert?'#':' '), realwidth);
        buffer[realwidth] = '\n';
        buffer[realwidth + 1] = '\0';
        for(y=0; y<h; y++ ){
                fputs(buffer, fp);
        }
}

static int writeASCII(QRcode *qrcode, const char *outfile, int invert)
{
        FILE *fp;
        unsigned char *row;
        int x, y;
        int realwidth;
        char *buffer, *p;
        int buffer_s;
        char black = '#';
        char white = ' ';

        if(invert) {
                black = ' ';
                white = '#';
        }

        size = 1;

        fp = openFile(outfile);

        realwidth = (qrcode->width + margin * 2) * 2;
        buffer_s = realwidth + 1;
        buffer = (char *)malloc( buffer_s );
        if(buffer == NULL) {
                fprintf(stderr, "Failed to allocate memory.\n");
                exit(EXIT_FAILURE);
        }

        /* top margin */
        writeASCII_margin(fp, realwidth, buffer, buffer_s, invert);

        /* data */
        for(y=0; y<qrcode->width; y++) {
                row = qrcode->data+(y*qrcode->width);
                p = buffer;

                memset(p, white, margin * 2);
                p += margin * 2;

                for(x=0; x<qrcode->width; x++) {
                        if(row[x]&0x1) {
                                *p++ = black;
                                *p++ = black;
                        } else {
                                *p++ = white;
                                *p++ = white;
                        }
                }

                memset(p, white, margin * 2);
                p += margin * 2;
                *p++ = '\n';
                *p++ = '\0';
                fputs( buffer, fp );
        }

        /* bottom margin */
        writeASCII_margin(fp, realwidth, buffer, buffer_s, invert);

        fclose(fp);
        free(buffer);

        return 0;
}

static QRcode *encode(const unsigned char *intext, int length)
{
        QRcode *code;

        if(micro) {
                if(eightbit) {
                        code = QRcode_encodeDataMQR(length, intext, version, level);
                } else {
                        code = QRcode_encodeStringMQR((char *)intext, version, level, hint, casesensitive);
                }
        } else {
                if(eightbit) {
                        code = QRcode_encodeData(length, intext, version, level);
                } else {
                        code = QRcode_encodeString((char *)intext, version, level, hint, casesensitive);
                }
        }

        return code;
}

static void qrencode(const unsigned char *intext, int length, const char *outfile)
{
        QRcode *qrcode;
        
        qrcode = encode(intext, length);
        if(qrcode == NULL) {
                perror("Failed to encode the input data");
                exit(EXIT_FAILURE);
        }
        switch(image_type) {
                case PNG_TYPE:
                        writePNG(qrcode, outfile);
                        break;
                case EPS_TYPE:
                        writeEPS(qrcode, outfile);
                        break;
                case SVG_TYPE:
                        writeSVG(qrcode, outfile);
                        break;
                case ANSI_TYPE:
                case ANSI256_TYPE:
                        writeANSI(qrcode, outfile);
                        break;
                case ASCIIi_TYPE:
                        writeASCII(qrcode, outfile,  1);
                        break;
                case ASCII_TYPE:
                        writeASCII(qrcode, outfile,  0);
                        break;
                case UTF8_TYPE:
                        writeUTF8(qrcode, outfile, 0);
                        break;
                case ANSIUTF8_TYPE:
                        writeUTF8(qrcode, outfile, 1);
                        break;
                default:
                        fprintf(stderr, "Unknown image type.\n");
                        exit(EXIT_FAILURE);
        }
        QRcode_free(qrcode);
}

static QRcode_List *encodeStructured(const unsigned char *intext, int length)
{
        QRcode_List *list;

        if(eightbit) {
                list = QRcode_encodeDataStructured(length, intext, version, level);
        } else {
                list = QRcode_encodeStringStructured((char *)intext, version, level, hint, casesensitive);
        }

        return list;
}

static void qrencodeStructured(const unsigned char *intext, int length, const char *outfile)
{
        QRcode_List *qrlist, *p;
        char filename[FILENAME_MAX];
        char *base, *q, *suffix = NULL;
        const char *type_suffix;
        int i = 1;
        size_t suffix_size;

        switch(image_type) {
                case PNG_TYPE:
                        type_suffix = ".png";
                        break;
                case EPS_TYPE:
                        type_suffix = ".eps";
                        break;
                case SVG_TYPE:
                        type_suffix = ".svg";
                        break;
                case ANSI_TYPE:
                case ANSI256_TYPE:
                case ASCII_TYPE:
                case UTF8_TYPE:
                case ANSIUTF8_TYPE:
                        type_suffix = ".txt";
                        break;
                default:
                        fprintf(stderr, "Unknown image type.\n");
                        exit(EXIT_FAILURE);
        }

        if(outfile == NULL) {
                fprintf(stderr, "An output filename must be specified to store the structured images.\n");
                exit(EXIT_FAILURE);
        }
        base = strdup(outfile);
        if(base == NULL) {
                fprintf(stderr, "Failed to allocate memory.\n");
                exit(EXIT_FAILURE);
        }
        suffix_size = strlen(type_suffix);
        if(strlen(base) > suffix_size) {
                q = base + strlen(base) - suffix_size;
                if(strcasecmp(type_suffix, q) == 0) {
                        suffix = strdup(q);
                        *q = '\0';
                }
        }
        
        qrlist = encodeStructured(intext, length);
        if(qrlist == NULL) {
                perror("Failed to encode the input data");
                exit(EXIT_FAILURE);
        }

        for(p = qrlist; p != NULL; p = p->next) {
                if(p->code == NULL) {
                        fprintf(stderr, "Failed to encode the input data.\n");
                        exit(EXIT_FAILURE);
                }
                if(suffix) {
                        snprintf(filename, FILENAME_MAX, "%s-%02d%s", base, i, suffix);
                } else {
                        snprintf(filename, FILENAME_MAX, "%s-%02d", base, i);
                }
                switch(image_type) {
                        case PNG_TYPE: 
                                writePNG(p->code, filename);
                                break;
                        case EPS_TYPE: 
                                writeEPS(p->code, filename);
                                break;
                        case SVG_TYPE: 
                                writeSVG(p->code, filename);
                                break;
                        case ANSI_TYPE:
                        case ANSI256_TYPE:
                                writeANSI(p->code, filename);
                                break;
                        case ASCIIi_TYPE:
                                writeASCII(p->code, filename, 1);
                                break;
                        case ASCII_TYPE:
                                writeASCII(p->code, filename, 0);
                                break;
                        case UTF8_TYPE:
                                writeUTF8(p->code, filename, 0);
                                break;
                        case ANSIUTF8_TYPE:
                                writeUTF8(p->code, filename, 0);
                                break;

                        default:
                                fprintf(stderr, "Unknown image type.\n");
                                exit(EXIT_FAILURE);
                }
                i++;
        }

        free(base);
        if(suffix) {
                free(suffix);
        }

        QRcode_List_free(qrlist);
}

#ifndef ZOO_SERVICE_PROVIDER
int main(int argc, char **argv)
#else
        extern "C" {
#ifdef WIN32
__declspec(dllexport)
#endif
int QREncode(maps*& conf, maps*& inputs, maps*& outputs)
#endif
{
        int opt, lindex = -1;
        char *outfile = NULL;
        unsigned char *intext = NULL;
        int length = 0;

#ifndef ZOO_SERVICE_PROVIDER
        while((opt = getopt_long(argc, argv, optstring, options, &lindex)) != -1) {
                switch(opt) {
                        case 'h':
                                if(lindex == 0) {
                                        usage(1, 1);
                                } else {
                                        usage(1, 0);
                                }
                                exit(EXIT_SUCCESS);
                                break;
                        case 'o':
                                outfile = optarg;
                                break;
                        case 's':
                                size = atoi(optarg);
                                if(size <= 0) {
                                        fprintf(stderr, "Invalid size: %d\n", size);
                                        exit(EXIT_FAILURE);
                                }
                                break;
                        case 'v':
                                version = atoi(optarg);
                                if(version < 0) {
                                        fprintf(stderr, "Invalid version: %d\n", version);
                                        exit(EXIT_FAILURE);
                                }
                                break;
                        case 'l':
                                switch(*optarg) {
                                        case 'l':
                                        case 'L':
                                                level = QR_ECLEVEL_L;
                                                break;
                                        case 'm':
                                        case 'M':
                                                level = QR_ECLEVEL_M;
                                                break;
                                        case 'q':
                                        case 'Q':
                                                level = QR_ECLEVEL_Q;
                                                break;
                                        case 'h':
                                        case 'H':
                                                level = QR_ECLEVEL_H;
                                                break;
                                        default:
                                                fprintf(stderr, "Invalid level: %s\n", optarg);
                                                exit(EXIT_FAILURE);
                                                break;
                                }
                                break;
                        case 'm':
                                margin = atoi(optarg);
                                if(margin < 0) {
                                        fprintf(stderr, "Invalid margin: %d\n", margin);
                                        exit(EXIT_FAILURE);
                                }
                                break;
                        case 'd':
                                dpi = atoi(optarg);
                                if( dpi < 0 ) {
                                        fprintf(stderr, "Invalid DPI: %d\n", dpi);
                                        exit(EXIT_FAILURE);
                                }
                                break;
                        case 't':
                                if(strcasecmp(optarg, "png") == 0) {
                                        image_type = PNG_TYPE;
                                } else if(strcasecmp(optarg, "eps") == 0) {
                                        image_type = EPS_TYPE;
                                } else if(strcasecmp(optarg, "svg") == 0) {
                                        image_type = SVG_TYPE;
                                } else if(strcasecmp(optarg, "ansi") == 0) {
                                        image_type = ANSI_TYPE;
                                } else if(strcasecmp(optarg, "ansi256") == 0) {
                                        image_type = ANSI256_TYPE;
                                } else if(strcasecmp(optarg, "asciii") == 0) {
                                        image_type = ASCIIi_TYPE;
                                } else if(strcasecmp(optarg, "ascii") == 0) {
                                        image_type = ASCII_TYPE;
                                } else if(strcasecmp(optarg, "utf8") == 0) {
                                        image_type = UTF8_TYPE;
                                } else if(strcasecmp(optarg, "ansiutf8") == 0) {
                                        image_type = ANSIUTF8_TYPE;
                                } else {
                                        fprintf(stderr, "Invalid image type: %s\n", optarg);
                                        exit(EXIT_FAILURE);
                                }
                                break;
                        case 'S':
                                structured = 1;
                        case 'k':
                                hint = QR_MODE_KANJI;
                                break;
                        case 'c':
                                casesensitive = 1;
                                break;
                        case 'i':
                                casesensitive = 0;
                                break;
                        case '8':
                                eightbit = 1;
                                break;
                        case 'M':
                                micro = 1;
                                break;
                        case 'f':
                                if(color_set(fg_color, optarg)) {
                                        fprintf(stderr, "Invalid foreground color value.\n");
                                        exit(EXIT_FAILURE);
                                }
                                break;
                        case 'b':
                                if(color_set(bg_color, optarg)) {
                                        fprintf(stderr, "Invalid background color value.\n");
                                        exit(EXIT_FAILURE);
                                }
                                break;
                        case 'V':
                                usage(0, 0);
                                exit(EXIT_SUCCESS);
                                break;
                        default:
                                fprintf(stderr, "Try `qrencode --help' for more information.\n");
                                exit(EXIT_FAILURE);
                                break;
                }
        }

        if(argc == 1) {
                usage(1, 0);
                exit(EXIT_SUCCESS);
        }

        if(outfile == NULL && image_type == PNG_TYPE) {
                fprintf(stderr, "No output filename is given.\n");
                exit(EXIT_FAILURE);
        }

        if(optind < argc) {
                intext = (unsigned char *)argv[optind];
                length = strlen((char *)intext);
        }
        if(intext == NULL) {
                intext = readStdin(&length);
        }
#else
        outfile=(char*)malloc(1024*sizeof(char));
        map *tmpMap=getMapFromMaps(conf,"main","tmpPath");
        sprintf(outfile,"%s/qr_%d.png",tmpMap->value,getpid());
        tmpMap=getMapFromMaps(inputs,"Text","value");
        intext=(unsigned char*)tmpMap->value;
        dpi = 92;
        level = QR_ECLEVEL_H;
        map* tmp1=getMapFromMaps(inputs,"size","value");
        if(tmp1!=NULL)
                size = atoi(tmp1->value);
        tmp1=getMapFromMaps(inputs,"bgcolor","value");
        if(tmp1!=NULL && color_set(bg_color, tmp1->value)){
                setMapInMaps(conf,"lenv","message","Unable to parse bgcolor settings");
                return SERVICE_FAILED;
        }
        tmp1=getMapFromMaps(inputs,"fgcolor","value");
        if(tmp1!=NULL && color_set(fg_color, tmp1->value)){
                setMapInMaps(conf,"lenv","message","Unable to parse fgcolor settings");
                return SERVICE_FAILED;
        }
#endif
        
        if(micro && version > MQRSPEC_VERSION_MAX) {
                fprintf(stderr, "Version should be less or equal to %d.\n", MQRSPEC_VERSION_MAX);
                exit(EXIT_FAILURE);
        } else if(!micro && version > QRSPEC_VERSION_MAX) {
                fprintf(stderr, "Version should be less or equal to %d.\n", QRSPEC_VERSION_MAX);
                exit(EXIT_FAILURE);
        }

        if(margin < 0) {
                if(micro) {
                        margin = 2;
                } else {
                        margin = 4;
                }
        }

        if(micro) {
                if(version == 0) {
                        fprintf(stderr, "Version must be specified to encode a Micro QR Code symbol.\n");
                        exit(EXIT_FAILURE);
                }
                if(structured) {
                        fprintf(stderr, "Micro QR Code does not support structured symbols.\n");
                        exit(EXIT_FAILURE);
                }
        }

        if(structured) {
                if(version == 0) {
                        fprintf(stderr, "Version must be specified to encode structured symbols.\n");
                        exit(EXIT_FAILURE);
                }
                qrencodeStructured(intext, length, outfile);
        } else {
                qrencode(intext, length, outfile);
        }

#ifdef ZOO_SERVICE_PROVIDER
        FILE * fichier=fopen(outfile,"rb");
        fseek(fichier, 0, SEEK_END);
        long count = ftell(fichier);
        rewind(fichier);
        
        struct stat file_status;
        stat(outfile, &file_status);
        if(fichier==NULL){
                fprintf(stderr,"Failed to open file %s for reading purpose.\n",outfile);
                setMapInMaps(conf,"lenv","message","Unable to read produced file. Please try again later");
                return SERVICE_FAILED;
        }

        maps* tmp=getMaps(outputs,"QR");
        map* tmpMap1=getMapFromMaps(outputs,"QR","value");
        if(tmpMap1==NULL){
                addToMap(outputs->content,"value","null");
                tmpMap1=getMapFromMaps(outputs,"QR","value");
        }
        free(tmpMap1->value);
        tmpMap1->value=(char*) malloc((count+1)*sizeof(char));  
        fread(tmpMap1->value,1,count*sizeof(char),fichier);
        fclose(fichier);
        unlink(outfile);

        char rsize[100];
        sprintf(rsize,"%d",count*sizeof(char));
        addToMap(tmpMap1,"size",rsize);  
        return SERVICE_SUCCEEDED;
#endif

        return 0;
}
#ifdef ZOO_SERVICE_PROVIDER
        }
#endif