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author	Joas Schilling <nickvergessen@gmx.de>	2014-05-03 16:57:04 +0200
committer	Joas Schilling <nickvergessen@gmx.de>	2014-05-29 02:14:40 +0200
commit	f01e0a2eef0604367620e8b9aa323f3feb86ea3c (patch)
tree	e2dcd7c7f72e0bc80f809d46ae3a6d25278c3508 /phpBB/phpbb/db/migration/data/v310/namespaces.php
parent	ed8c16bf0ddb8fc8723aa870607f255d80aab55b (diff)
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[ticket/10073] Deduplicate the if statement

PHPBB3-10073

Diffstat (limited to 'phpBB/phpbb/db/migration/data/v310/namespaces.php')

0 files changed, 0 insertions, 0 deletions

generated by cgit v1.2.1 (git 2.21.0) at 2026-05-03 15:03:23 +0000

/*
 * Guillaume Cottenceau (gc at mandriva.com)
 *
 * Copyright 2002-2005 Mandriva
 *
 * This software may be freely redistributed under the terms of the GNU
 * public license.
 *
 */

#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>

#define PNG_DEBUG 3
#include <png.h>

void abort_(const char * s, ...)
{
	va_list args;
	va_start(args, s);
	vfprintf(stderr, s, args);
	fprintf(stderr, "\n");
	va_end(args);
	abort();
}

int x, y;

int width, height;
png_byte color_type;
png_byte bit_depth;

png_structp png_ptr;
png_infop info_ptr;
int number_of_passes;
png_bytep * row_pointers;

void read_png_file(char* file_name)
{
	char header[8];	// 8 is the maximum size that can be checked

	/* open file and test for it being a png */
	FILE *fp = fopen(file_name, "rb");
	if (!fp)
		abort_("[read_png_file] File %s could not be opened for reading", file_name);
	fread(header, 1, 8, fp);
	if (png_sig_cmp(header, 0, 8))
		abort_("[read_png_file] File %s is not recognized as a PNG file", file_name);


	/* initialize stuff */
	png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
	
	if (!png_ptr)
		abort_("[read_png_file] png_create_read_struct failed");

	info_ptr = png_create_info_struct(png_ptr);
	if (!info_ptr)
		abort_("[read_png_file] png_create_info_struct failed");

	if (setjmp(png_jmpbuf(png_ptr)))
		abort_("[read_png_file] Error during init_io");

	png_init_io(png_ptr, fp);
	png_set_sig_bytes(png_ptr, 8);

	png_read_info(png_ptr, info_ptr);

	width = info_ptr->width;
	height = info_ptr->height;
	color_type = info_ptr->color_type;
	bit_depth = info_ptr->bit_depth;

	number_of_passes = png_set_interlace_handling(png_ptr);
	png_read_update_info(png_ptr, info_ptr);


	/* read file */
	if (setjmp(png_jmpbuf(png_ptr)))
		abort_("[read_png_file] Error during read_image");

	row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * height);
	for (y=0; y<height; y++)
		row_pointers[y] = (png_byte*) malloc(info_ptr->rowbytes);

	png_read_image(png_ptr, row_pointers);
}


void write_png_file(char* file_name)
{
	/* create file */
	FILE *fp = fopen(file_name, "wb");
	if (!fp)
		abort_("[write_png_file] File %s could not be opened for writing", file_name);


	/* initialize stuff */
	png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
	
	if (!png_ptr)
		abort_("[write_png_file] png_create_write_struct failed");

	info_ptr = png_create_info_struct(png_ptr);
	if (!info_ptr)
		abort_("[write_png_file] png_create_info_struct failed");

	if (setjmp(png_jmpbuf(png_ptr)))
		abort_("[write_png_file] Error during init_io");

	png_init_io(png_ptr, fp);


	/* write header */
	if (setjmp(png_jmpbuf(png_ptr)))
		abort_("[write_png_file] Error during writing header");

	png_set_IHDR(png_ptr, info_ptr, width, height,
		     bit_depth, color_type, PNG_INTERLACE_NONE,
		     PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);

	png_write_info(png_ptr, info_ptr);


	/* write bytes */
	if (setjmp(png_jmpbuf(png_ptr)))
		abort_("[write_png_file] Error during writing bytes");

	png_write_image(png_ptr, row_pointers);


	/* end write */
	if (setjmp(png_jmpbuf(png_ptr)))
		abort_("[write_png_file] Error during end of write");

	png_write_end(png_ptr, NULL);

}

void process_file(char* shift)
{
	int shift_ = atoi(shift);

	if (info_ptr->color_type != PNG_COLOR_TYPE_RGBA)
		abort_("[process_file] color_type of input file must be PNG_COLOR_TYPE_RGBA (is %d)", info_ptr->color_type);

	width -= shift_;
	for (y=0; y<height; y++) {
		row_pointers[y] += 4 * shift_;
	}

}


int main(int argc, char **argv)
{
	if (argc != 4)
		abort_("Usage: program_name <file_in> <file_out> <shift>");

	read_png_file(argv[1]);
	process_file(argv[3]);
	write_png_file(argv[2]);
}