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169 lines
4.0 KiB
169 lines
4.0 KiB
/* Generic support functions for Xcftools
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*
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* Copyright (C) 2006 Henning Makholm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "xcftools.h"
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#include <string.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <errno.h>
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const char *progname = "$0" ;
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int verboseFlag = 0 ;
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static void __ATTRIBUTE__((noreturn))
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vFatalGeneric(int status,const char *format,va_list args)
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{
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if( format ) {
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if( *format == '!' ) {
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vfprintf(stderr,format+1,args);
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fprintf(stderr,": %s\n",strerror(errno));
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} else {
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vfprintf(stderr,format,args);
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fputc('\n',stderr);
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}
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}
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exit(status);
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}
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void
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FatalGeneric(int status,const char* format,...)
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{
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va_list v; va_start(v,format);
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if( format ) fprintf(stderr,"%s: ",progname);
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vFatalGeneric(status,format,v);
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}
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void
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FatalUnexpected(const char* format,...)
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{
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va_list v; va_start(v,format);
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fprintf(stderr,"%s: ",progname);
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vFatalGeneric(127,format,v) ;
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}
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void
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FatalBadXCF(const char* format,...)
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{
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va_list v; va_start(v,format);
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fprintf(stderr,"%s: %s:\n ",progname,_("Corrupted or malformed XCF file"));
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vFatalGeneric(125,format,v) ;
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}
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void
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xcfCheckspace(uint32_t addr,int spaceafter,const char *format,...)
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{
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if( xcf_length < spaceafter || addr > xcf_length - spaceafter ) {
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va_list v; va_start(v,format);
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fprintf(stderr,"%s: %s\n ",progname,_("Corrupted or truncated XCF file"));
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fprintf(stderr,"(0x%" PRIXPTR " bytes): ",(uintptr_t)xcf_length);
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vFatalGeneric(125,format,v) ;
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}
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}
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void
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FatalUnsupportedXCF(const char* format,...)
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{
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va_list v; va_start(v,format);
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fprintf(stderr,"%s: %s\n ",progname,
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_("The image contains features not understood by this program:"));
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vFatalGeneric(123,format,v) ;
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}
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void
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gpl_blurb(void)
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{
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fprintf(stderr,PACKAGE_STRING "\n");
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fprintf(stderr,
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_("This program is free software; you can modify and distribute it\n"
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"under the terms of the GNU General Public License, version 2.\n"
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"There is no warranty for %s.\n\n"),
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PACKAGE_NAME);
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fprintf(stderr,
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_("Type \"%s -h\" to get an option summary.\n"),progname);
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exit(1) ;
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}
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/* ******************************************************* */
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void *
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xcfmalloc(size_t size)
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{
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void *ptr = malloc(size);
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if( !ptr )
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FatalUnexpected(_("Out of memory"));
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return ptr ;
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}
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void
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xcffree(void *block)
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{
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if( xcf_file &&
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(uint8_t*)block >= xcf_file &&
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(uint8_t*)block < xcf_file + xcf_length )
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;
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else
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free(block);
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}
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/* ******************************************************* */
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FILE *
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openout(const char *name)
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{
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FILE *newfile ;
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if( strcmp(name,"-") == 0 )
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return stdout ;
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newfile = fopen(name,"wb") ;
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if( newfile == NULL )
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FatalUnexpected(_("!Cannot create file %s"),name);
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return newfile ;
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}
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void
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closeout(FILE *f,const char *name)
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{
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if( f == NULL )
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return ;
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if( fflush(f) == 0 ) {
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errno = 0 ;
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if( !ferror(f) ) {
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if( fclose(f) == 0 )
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return ;
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} else if( errno == 0 ) {
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/* Attempt to coax a valid errno out of the standard library,
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* following an idea by Bruno Haible
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* http://lists.gnu.org/archive/html/bug-gnulib/2003-09/msg00157.html
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*/
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if( fputc('\0', f) != EOF &&
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fflush(f) == 0 )
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errno = EIO ; /* Argh, everything succeds. Just call it an I/O error */
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}
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}
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FatalUnexpected(_("!Error writing file %s"),name);
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}
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