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CenteredClipView.h

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    qrenc.c 29.33 KiB
    /**
     * qrencode - QR Code encoder
     *
     * QR Code encoding tool
     * Copyright (C) 2006-2013 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 <string.h>
    #include <png.h>
    #include <getopt.h>
    #include <fcntl.h>
    #include <io.h>
    
    #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 rle = 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};
    
    static int verbose = 0;
    
    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'},
    	{"rle"          , no_argument      , &rle,   1},
    	{"micro"        , no_argument      , NULL, 'M'},
    	{"foreground"   , required_argument, NULL, 'f'},
    	{"background"   , required_argument, NULL, 'b'},
    	{"version"      , no_argument      , NULL, 'V'},
    	{"verbose"      , no_argument      , &verbose, 1},
    	{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. See SYMBOL VERSIONS for more\n"
    "               information. (default=auto)\n\n"
    "  -m NUMBER, --margin=NUMBER\n"
    "               specify the width of the margins. (default=4 (2 for Micro QR)))\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"
    "      --rle    enable run-length encoding for SVG.\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"
    "      --verbose\n"
    "               display verbose information to stderr.\n\n"
    "  [STRING]     input data. If it is not specified, data will be taken from\n"
    "               standard input.\n\n"
    "*SYMBOL VERSIONS\n"
    "               The symbol versions of QR Code range from Version 1 to Version\n"
    "               40. Each version has a different module configuration or number\n"
    "               of modules, ranging from Version 1 (21 x 21 modules) up to\n"
    "               Version 40 (177 x 177 modules). Each higher version number\n"
    "               comprises 4 additional modules per side by default. See\n"
    "               http://www.qrcode.com/en/about/version.html for a detailed\n"
    "               version list.\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;
    		_setmode(_fileno(stdout), O_BINARY);
    	} 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;
    		_setmode(_fileno(stdout), O_BINARY);
    	} 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);
    	if(palette == NULL) {
    		fprintf(stderr, "Failed to allocate memory.\n");
    		exit(EXIT_FAILURE);
    	}
    	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);
    	free(palette);
    
    	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));
    
    		if( !rle ) {
    			/* no RLE */
    			for(x=0; x<qrcode->width; x++) {
    				if(*(row+x)&0x1) {
    					writeSVG_writeRect(fp,	margin + x,
    								margin + y, 1,
    								fg, fg_opacity);
    				}
    			}
    		} else {
    			/* 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));
    
    		memset( buffer, 0, 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;
    	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 */
    	for(y = 0; y < qrcode->width; y += 2) {
    		unsigned char *row1, *row2;
    		row1 = qrcode->data + y*qrcode->width;
    		row2 = row1 + 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) {
    				if(y < qrcode->width - 1 && row2[x] & 1) {
    					fputc(' ', fp);
    				} else {
    					fputs("\342\226\204", fp);
    				}
    			} else {
    				if(y < qrcode->width - 1 && 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 + 2;
    	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);
    	}
    
    	if(verbose) {
    		fprintf(stderr, "File: %s, Version: %d\n", (outfile!=NULL)?outfile:"(stdout)", qrcode->version);
    	}
    
    	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);
    		}
    
    		if(verbose) {
    			fprintf(stderr, "File: %s, Version: %d\n", filename, p->code->version);
    		}
    
    		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);
    }
    
    int main(int argc, char **argv)
    {
    	int opt, lindex = -1;
    	char *outfile = NULL;
    	unsigned char *intext = NULL;
    	int length = 0;
    
    	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;
    				break;
    			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;
    			case 0:
    				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);
    	}
    
    	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);
    	}
    
    	return 0;
    }