+++ /dev/null
-/*
- * Utility functions
- */
-/*
- * This is part of ypp-sc-tools, a set of third-party tools for assisting
- * players of Yohoho Puzzle Pirates.
- *
- * Copyright (C) 2009 Ian Jackson <ijackson@chiark.greenend.org.uk>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- * Yohoho and Puzzle Pirates are probably trademarks of Three Rings and
- * are used without permission. This program is not endorsed or
- * sponsored by Three Rings.
- */
-
-#include "common.h"
-
-void *mmalloc(size_t sz) {
- void *r;
- if (!sz) return 0;
- sysassert( r= malloc(sz) );
- return r;
-}
-void *mrealloc(void *p, size_t sz) {
- assert(sz);
- void *r;
- sysassert( r= realloc(p,sz) );
- return r;
-}
-
-
-FILE *dbfile;
-static const char *basepath; /* as passed in by caller */
-static pid_t dbzcat;
-
-int dbfile_gzopen(const char *basepath_spec) {
- assert(!dbfile);
-
- basepath= basepath_spec;
-
- char *zpath= masprintf("%s.gz", basepath);
- int e= gzopen(zpath, O_RDONLY, &dbfile, &dbzcat, 0);
- free(zpath);
- if (e) { errno=e; sysassert(errno==ENOENT); return 0; }
-
- return 1;
-}
-
-int dbfile_open(const char *tpath) {
- assert(!dbfile);
-
- basepath= tpath;
-
- dbzcat= -1;
- dbfile= fopen(tpath,"r");
- if (!dbfile) { sysassert(errno==ENOENT); return 0; }
- return 1;
-}
-
-void dbfile_close(void) {
- gzclose(&dbfile, &dbzcat, basepath);
-}
-
-#define dbassertgl(x) ((x) ? (void)0 : dbfile_assertfail(file,line,#x))
-
-void dbfile_getsline(char *lbuf, size_t lbufsz, const char *file, int line) {
- errno=0;
- char *s= fgets(lbuf,lbufsz,dbfile);
- sysassert(!ferror(dbfile));
- dbassertgl(!feof(dbfile));
- assert(s);
- int l= strlen(lbuf);
- dbassertgl(l>0); dbassertgl(lbuf[--l]=='\n');
- lbuf[l]= 0;
-}
-
-int dbfile_vscanf(const char *fmt, va_list al) {
- int r= vfscanf(dbfile,fmt,al);
- sysassert(!ferror(dbfile));
- return r;
-}
-
-int dbfile_scanf(const char *fmt, ...) {
- va_list al;
- va_start(al,fmt);
- int r= dbfile_vscanf(fmt,al);
- va_end(al);
- return r;
-}
-
-void dbfile_assertfail(const char *file, int line, const char *m) {
- if (dbzcat)
- fatal("Error in dictionary file %s.gz:\n"
- " Requirement not met at %s:%d:\n"
- " %s",
- basepath, file,line, m);
- else if (dbfile)
- fatal("Error in dictionary file %s at byte %ld:\n"
- " Requirement not met at %s:%d:\n"
- " %s",
- basepath,(long)ftell(dbfile), file,line, m);
- else
- fatal("Semantic error in dictionaries:\n"
- " Requirement not met at %s:%d:\n"
- " %s",
- file,line, m);
-}
-
-int gzopen(const char *zpath, int oflags, FILE **f_r, pid_t *pid_r,
- const char *gziplevel /* 0 for read; may be 0, or "-1" etc. */) {
-
- int zfd= open(zpath, oflags, 0666);
- if (!zfd) return errno;
-
- int pipefds[2];
- sysassert(! pipe(pipefds) );
-
- int oi,io; const char *cmd; const char *stdiomode;
- switch ((oflags & O_ACCMODE)) {
- case O_RDONLY: oi=0; io=1; cmd="gunzip"; stdiomode="r"; break;
- case O_WRONLY: oi=1; io=0; cmd="gzip"; stdiomode="w"; break;
- default: abort();
- }
-
- sysassert( (*pid_r=fork()) != -1 );
- if (!*pid_r) {
- sysassert( dup2(zfd,oi)==oi );
- sysassert( dup2(pipefds[io],io)==io );
- sysassert(! close(zfd) );
- sysassert(! close(pipefds[0]) );
- sysassert(! close(pipefds[1]) );
- execlp(cmd,cmd,gziplevel,(char*)0);
- sysassert(!"execlp gzip/gunzip");
- }
- sysassert(! close(zfd) );
- sysassert(! close(pipefds[io]) );
- sysassert( *f_r= fdopen(pipefds[oi], stdiomode) );
-
- return 0;
-}
-
-void gzclose(FILE **f, pid_t *p, const char *what) {
- if (!*f) return;
-
- sysassert(!ferror(*f));
- sysassert(!fclose(*f));
-
- if (*p != -1) {
- char *process= masprintf("%s (de)compressor",what);
- waitpid_check_exitstatus(*p,process,1);
- free(process);
- *p= -1;
- }
-
- *f= 0;
-}