Annotation of embedaddon/php/ext/gd/gd_ctx.c, revision 1.1
1.1 ! misho 1: /*
! 2: +----------------------------------------------------------------------+
! 3: | PHP Version 5 |
! 4: +----------------------------------------------------------------------+
! 5: | Copyright (c) 1997-2012 The PHP Group |
! 6: +----------------------------------------------------------------------+
! 7: | This source file is subject to version 3.01 of the PHP license, |
! 8: | that is bundled with this package in the file LICENSE, and is |
! 9: | available through the world-wide-web at the following url: |
! 10: | http://www.php.net/license/3_01.txt |
! 11: | If you did not receive a copy of the PHP license and are unable to |
! 12: | obtain it through the world-wide-web, please send a note to |
! 13: | license@php.net so we can mail you a copy immediately. |
! 14: +----------------------------------------------------------------------+
! 15: | Authors: Stanislav Malyshev <stas@php.net> |
! 16: +----------------------------------------------------------------------+
! 17: */
! 18:
! 19: /* $Id: gd_ctx.c 321634 2012-01-01 13:15:04Z felipe $ */
! 20:
! 21: #include "php_gd.h"
! 22:
! 23: #define CTX_PUTC(c,ctx) ctx->putC(ctx, c)
! 24:
! 25: static void _php_image_output_putc(struct gdIOCtx *ctx, int c)
! 26: {
! 27: /* without the following downcast, the write will fail
! 28: * (i.e., will write a zero byte) for all
! 29: * big endian architectures:
! 30: */
! 31: unsigned char ch = (unsigned char) c;
! 32: TSRMLS_FETCH();
! 33: php_write(&ch, 1 TSRMLS_CC);
! 34: }
! 35:
! 36: static int _php_image_output_putbuf(struct gdIOCtx *ctx, const void* buf, int l)
! 37: {
! 38: TSRMLS_FETCH();
! 39: return php_write((void *)buf, l TSRMLS_CC);
! 40: }
! 41:
! 42: static void _php_image_output_ctxfree(struct gdIOCtx *ctx)
! 43: {
! 44: if(ctx) {
! 45: efree(ctx);
! 46: }
! 47: }
! 48:
! 49: /* {{{ _php_image_output_ctx */
! 50: static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type, char *tn, void (*func_p)())
! 51: {
! 52: zval *imgind;
! 53: char *file = NULL;
! 54: int file_len = 0;
! 55: long quality, basefilter;
! 56: gdImagePtr im;
! 57: FILE *fp = NULL;
! 58: int argc = ZEND_NUM_ARGS();
! 59: int q = -1, i;
! 60: int f = -1;
! 61: gdIOCtx *ctx;
! 62:
! 63: /* The third (quality) parameter for Wbmp stands for the threshold when called from image2wbmp().
! 64: * The third (quality) parameter for Wbmp and Xbm stands for the foreground color index when called
! 65: * from imagey<type>().
! 66: */
! 67:
! 68: if (image_type == PHP_GDIMG_TYPE_XBM) {
! 69: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rs!|ll", &imgind, &file, &file_len, &quality, &basefilter) == FAILURE) {
! 70: return;
! 71: }
! 72: } else {
! 73: /* PHP_GDIMG_TYPE_GIF
! 74: * PHP_GDIMG_TYPE_PNG
! 75: * PHP_GDIMG_TYPE_JPG
! 76: * PHP_GDIMG_TYPE_WBM */
! 77: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|s!ll", &imgind, &file, &file_len, &quality, &basefilter) == FAILURE) {
! 78: return;
! 79: }
! 80: }
! 81:
! 82: ZEND_FETCH_RESOURCE(im, gdImagePtr, &imgind, -1, "Image", phpi_get_le_gd());
! 83:
! 84: if (argc > 1) {
! 85: if (argc >= 3) {
! 86: q = quality; /* or colorindex for foreground of BW images (defaults to black) */
! 87: if (argc == 4) {
! 88: f = basefilter;
! 89: }
! 90: }
! 91: }
! 92:
! 93: if (argc > 1 && file_len) {
! 94: if (strlen(file) != file_len) {
! 95: RETURN_FALSE;
! 96: }
! 97: PHP_GD_CHECK_OPEN_BASEDIR(file, "Invalid filename");
! 98:
! 99: fp = VCWD_FOPEN(file, "wb");
! 100: if (!fp) {
! 101: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to open '%s' for writing: %s", file, strerror(errno));
! 102: RETURN_FALSE;
! 103: }
! 104:
! 105: ctx = gdNewFileCtx(fp);
! 106: } else {
! 107: ctx = emalloc(sizeof(gdIOCtx));
! 108: ctx->putC = _php_image_output_putc;
! 109: ctx->putBuf = _php_image_output_putbuf;
! 110: #if HAVE_LIBGD204
! 111: ctx->gd_free = _php_image_output_ctxfree;
! 112: #else
! 113: ctx->free = _php_image_output_ctxfree;
! 114: #endif
! 115:
! 116: #if APACHE && defined(CHARSET_EBCDIC)
! 117: /* XXX this is unlikely to work any more thies@thieso.net */
! 118: /* This is a binary file already: avoid EBCDIC->ASCII conversion */
! 119: ap_bsetflag(php3_rqst->connection->client, B_EBCDIC2ASCII, 0);
! 120: #endif
! 121: }
! 122:
! 123: switch(image_type) {
! 124: case PHP_GDIMG_CONVERT_WBM:
! 125: if(q<0||q>255) {
! 126: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid threshold value '%d'. It must be between 0 and 255", q);
! 127: }
! 128: case PHP_GDIMG_TYPE_JPG:
! 129: (*func_p)(im, ctx, q);
! 130: break;
! 131: case PHP_GDIMG_TYPE_PNG:
! 132: (*func_p)(im, ctx, q, f);
! 133: break;
! 134: case PHP_GDIMG_TYPE_XBM:
! 135: case PHP_GDIMG_TYPE_WBM:
! 136: if (argc < 3) {
! 137: for(i=0; i < gdImageColorsTotal(im); i++) {
! 138: if(!gdImageRed(im, i) && !gdImageGreen(im, i) && !gdImageBlue(im, i)) break;
! 139: }
! 140: q = i;
! 141: }
! 142: if (image_type == PHP_GDIMG_TYPE_XBM) {
! 143: (*func_p)(im, file, q, ctx);
! 144: } else {
! 145: (*func_p)(im, q, ctx);
! 146: }
! 147: break;
! 148: default:
! 149: (*func_p)(im, ctx);
! 150: break;
! 151: }
! 152:
! 153: #if HAVE_LIBGD204
! 154: ctx->gd_free(ctx);
! 155: #else
! 156: ctx->free(ctx);
! 157: #endif
! 158:
! 159: if(fp) {
! 160: fflush(fp);
! 161: fclose(fp);
! 162: }
! 163:
! 164: RETURN_TRUE;
! 165: }
! 166: /* }}} */
! 167:
! 168: /*
! 169: * Local variables:
! 170: * tab-width: 4
! 171: * c-basic-offset: 4
! 172: * End:
! 173: * vim600: sw=4 ts=4 fdm=marker
! 174: * vim<600: sw=4 ts=4
! 175: */
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