openwrt-packages/libs/qrencode/patches/001-disable-png.patch

--- a/configure.ac
+++ b/configure.ac
@@ -58,9 +58,6 @@ AC_ARG_WITH([tools], [AS_HELP_STRING([--
  [build_tools=$withval], [build_tools=yes])
 
 AM_CONDITIONAL(BUILD_TOOLS, [test "x$build_tools" = "xyes" ])
-if test x$build_tools = xyes ; then
-	PKG_CHECK_MODULES(png, "libpng")
-fi
 
 dnl --with-tests
 AC_ARG_WITH([tests], [AS_HELP_STRING([--with-tests], [build tests [default=no]])],
--- a/qrenc.c
+++ b/qrenc.c
@@ -25,7 +25,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <png.h>
 #include <getopt.h>
 
 #include "qrencode.h"
@@ -49,7 +48,6 @@ static unsigned int bg_color[4] = {255,
 static int verbose = 0;
 
 enum imageType {
-	PNG_TYPE,
 	EPS_TYPE,
 	SVG_TYPE,
 	ANSI_TYPE,
@@ -60,7 +58,7 @@ enum imageType {
 	ANSIUTF8_TYPE
 };
 
-static enum imageType image_type = PNG_TYPE;
+static enum imageType image_type = SVG_TYPE;
 
 static const struct option options[] = {
 	{"help"         , no_argument      , NULL, 'h'},
@@ -96,13 +94,13 @@ static void usage(int help, int longopt)
 		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"
+"Encode input data in a QR Code and save as a SVG 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"
+"               symbols are written to FILENAME-01.svg, FILENAME-02.svg, ...\n"
 "               (suffix is removed from FILENAME, if specified)\n"
 "  -s NUMBER, --size=NUMBER\n"
 "               specify module size in dots (pixels). (default=3)\n\n"
@@ -116,9 +114,9 @@ static void usage(int help, int longopt)
 "               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"
+"  -t {EPS,SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}, --type={EPS,\n"
 "               SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}\n"
-"               specify the type of the generated image. (default=PNG)\n\n"
+"               specify the type of the generated image. (default=SVG)\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"
@@ -133,7 +131,7 @@ static void usage(int help, int longopt)
 "      --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"
+"               Color output support available only in SVG.\n"
 "  -V, --version\n"
 "               display the version number and copyrights of the qrencode.\n\n"
 "      --verbose\n"
@@ -153,12 +151,12 @@ static void usage(int help, int longopt)
 		} 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"
+"Encode input data in a QR Code and save as a SVG 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"
+"               symbols are written to FILENAME-01.svg, FILENAME-02.svg, ...\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"
@@ -166,8 +164,8 @@ static void usage(int help, int longopt)
 "  -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"
+"  -t {EPS,SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}\n"
+"               specify the type of the generated image. (default=SVG)\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"
@@ -178,7 +176,7 @@ static void usage(int help, int longopt)
 "  --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"
+"               Color output support available only in 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"
@@ -253,128 +251,6 @@ static FILE *openFile(const char *outfil
 	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);
-	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;
@@ -831,9 +707,6 @@ static void qrencode(const unsigned char
 	}
 
 	switch(image_type) {
-		case PNG_TYPE:
-			writePNG(qrcode, outfile);
-			break;
 		case EPS_TYPE:
 			writeEPS(qrcode, outfile);
 			break;
@@ -887,9 +760,6 @@ static void qrencodeStructured(const uns
 	size_t suffix_size;
 
 	switch(image_type) {
-		case PNG_TYPE:
-			type_suffix = ".png";
-			break;
 		case EPS_TYPE:
 			type_suffix = ".eps";
 			break;
@@ -948,9 +818,6 @@ static void qrencodeStructured(const uns
 		}
 
 		switch(image_type) {
-			case PNG_TYPE: 
-				writePNG(p->code, filename);
-				break;
 			case EPS_TYPE: 
 				writeEPS(p->code, filename);
 				break;
@@ -1062,9 +929,7 @@ int main(int argc, char **argv)
 				}
 				break;
 			case 't':
-				if(strcasecmp(optarg, "png") == 0) {
-					image_type = PNG_TYPE;
-				} else if(strcasecmp(optarg, "eps") == 0) {
+				if(strcasecmp(optarg, "eps") == 0) {
 					image_type = EPS_TYPE;
 				} else if(strcasecmp(optarg, "svg") == 0) {
 					image_type = SVG_TYPE;
@@ -1133,11 +998,6 @@ int main(int argc, char **argv)
 		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);
--- a/configure
+++ b/configure
@@ -12646,100 +12646,6 @@ else
   BUILD_TOOLS_FALSE=
 fi
 
-if test x$build_tools = xyes ; then
-
-pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for png" >&5
-$as_echo_n "checking for png... " >&6; }
-
-if test -n "$png_CFLAGS"; then
-    pkg_cv_png_CFLAGS="$png_CFLAGS"
- elif test -n "$PKG_CONFIG"; then
-    if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"\"libpng\"\""; } >&5
-  ($PKG_CONFIG --exists --print-errors ""libpng"") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then
-  pkg_cv_png_CFLAGS=`$PKG_CONFIG --cflags ""libpng"" 2>/dev/null`
-		      test "x$?" != "x0" && pkg_failed=yes
-else
-  pkg_failed=yes
-fi
- else
-    pkg_failed=untried
-fi
-if test -n "$png_LIBS"; then
-    pkg_cv_png_LIBS="$png_LIBS"
- elif test -n "$PKG_CONFIG"; then
-    if test -n "$PKG_CONFIG" && \
-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"\"libpng\"\""; } >&5
-  ($PKG_CONFIG --exists --print-errors ""libpng"") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; then
-  pkg_cv_png_LIBS=`$PKG_CONFIG --libs ""libpng"" 2>/dev/null`
-		      test "x$?" != "x0" && pkg_failed=yes
-else
-  pkg_failed=yes
-fi
- else
-    pkg_failed=untried
-fi
-
-
-
-if test $pkg_failed = yes; then
-   	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-
-if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
-        _pkg_short_errors_supported=yes
-else
-        _pkg_short_errors_supported=no
-fi
-        if test $_pkg_short_errors_supported = yes; then
-	        png_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs ""libpng"" 2>&1`
-        else
-	        png_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs ""libpng"" 2>&1`
-        fi
-	# Put the nasty error message in config.log where it belongs
-	echo "$png_PKG_ERRORS" >&5
-
-	as_fn_error $? "Package requirements (\"libpng\") were not met:
-
-$png_PKG_ERRORS
-
-Consider adjusting the PKG_CONFIG_PATH environment variable if you
-installed software in a non-standard prefix.
-
-Alternatively, you may set the environment variables png_CFLAGS
-and png_LIBS to avoid the need to call pkg-config.
-See the pkg-config man page for more details." "$LINENO" 5
-elif test $pkg_failed = untried; then
-     	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "The pkg-config script could not be found or is too old.  Make sure it
-is in your PATH or set the PKG_CONFIG environment variable to the full
-path to pkg-config.
-
-Alternatively, you may set the environment variables png_CFLAGS
-and png_LIBS to avoid the need to call pkg-config.
-See the pkg-config man page for more details.
-
-To get pkg-config, see <http://pkg-config.freedesktop.org/>.
-See \`config.log' for more details" "$LINENO" 5; }
-else
-	png_CFLAGS=$pkg_cv_png_CFLAGS
-	png_LIBS=$pkg_cv_png_LIBS
-        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-
-fi
-fi
-
 
 # Check whether --with-tests was given.
 if test "${with_tests+set}" = set; then :