static pngquant_error write_image(png8_image *output_image, png24_image *output_image24, const char *outname, struct pngquant_options *options)
{
FILE *outfile;
if (options->using_stdin) {
set_binary_mode(stdout);
outfile = stdout;
if (output_image) {
verbose_printf(options, " writing %d-color image to stdout", output_image->num_palette);
} else {
verbose_printf(options, " writing truecolor image to stdout");
}
} else {
if ((outfile = fopen(outname, "wb")) == NULL) {
fprintf(stderr, " error: cannot open %s for writing\n", outname);
return CANT_WRITE_ERROR;
}
const char *outfilename = strrchr(outname, '/');
if (outfilename) {
outfilename++;
} else {
outfilename = outname;
}
if (output_image) {
verbose_printf(options, " writing %d-color image as %s", output_image->num_palette, outfilename);
} else {
verbose_printf(options, " writing truecolor image as %s", outfilename);
}
}
pngquant_error retval;
#pragma omp critical (libpng)
{
if (output_image) {
retval = rwpng_write_image8(outfile, output_image);
} else {
retval = rwpng_write_image24(outfile, output_image24);
}
}
if (retval && retval != TOO_LARGE_FILE) {
fprintf(stderr, " error: failed writing image to %s\n", outname);
}
if (!options->using_stdin) {
fclose(outfile);
}
return retval;
}
static pngquant_error write_image(png8_image *output_image, png24_image *output_image24, const char *outname, struct pngquant_options *options)
{
FILE *outfile;
char *tempname = NULL;
if (options->using_stdout) {
set_binary_mode(stdout);
outfile = stdout;
if (output_image) {
verbose_printf(options, " writing %d-color image to stdout", output_image->num_palette);
} else {
verbose_printf(options, " writing truecolor image to stdout");
}
} else {
tempname = temp_filename(outname);
if (!tempname) return OUT_OF_MEMORY_ERROR;
if ((outfile = fopen(tempname, "wb")) == NULL) {
fprintf(stderr, " error: cannot open '%s' for writing\n", tempname);
free(tempname);
return CANT_WRITE_ERROR;
}
if (output_image) {
verbose_printf(options, " writing %d-color image as %s", output_image->num_palette, filename_part(outname));
} else {
verbose_printf(options, " writing truecolor image as %s", filename_part(outname));
}
}
pngquant_error retval;
#pragma omp critical (libpng)
{
if (output_image) {
retval = rwpng_write_image8(outfile, output_image);
} else {
retval = rwpng_write_image24(outfile, output_image24);
}
}
if (!options->using_stdout) {
fclose(outfile);
if (SUCCESS == retval) {
// Image has been written to a temporary file and then moved over destination.
// This makes replacement atomic and avoids damaging destination file on write error.
if (!replace_file(tempname, outname, options->force)) {
retval = CANT_WRITE_ERROR;
}
}
if (retval) {
unlink(tempname);
}
}
free(tempname);
if (retval && retval != TOO_LARGE_FILE) {
fprintf(stderr, " error: failed writing image to %s\n", outname);
}
return retval;
}
