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Diffstat (limited to 'uncmain.c')
| -rw-r--r-- | uncmain.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/uncmain.c b/uncmain.c new file mode 100644 index 0000000..a94279d --- /dev/null +++ b/uncmain.c @@ -0,0 +1,188 @@ + +/* @(#)uncmain.c 1.4 91/10/24 + * + * Uncompface - 48x48x1 image decompression. + * + * Copyright (c) James Ashton - Sydney University - June 1990. + * + * Written 11th November 1889. + * + * Permission is given to distribute these sources, as long as the + * copyright messages are not removed, and no monies are exchanged. + * + * No responsibility is taken for any errors on inaccuracies inherent + * either to the comments or the code of this program, but if reported + * to me, then an attempt will be made to fix them. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "compface.h" + +/* the buffer is longer than needed to handle sparse input formats */ +#define FACEBUFLEN 2048 +char fbuf[FACEBUFLEN]; + +/* IO file descriptors and their names */ +int infile = 0; +char *inname = "<stdin>"; +int outfile = 1; +char *outname = "<stdout>"; + +/* basename of executable */ +char *cmdname; + +#ifdef HAVE_STRERROR +char *strerrorwrap(int err); +#endif + +/* This really shouldn't be done with cpp */ +#ifndef HAVE_STRERROR +#define ERR ((errno < sys_nerr) ? sys_errlist[errno] : "") +#else +#define ERR (strerrorwrap(errno)) +#endif + +#define INITERR(s) {(void)strcpy(fbuf, cmdname); (void)strcat(fbuf, ": ");\ + (void)strcat(fbuf, (s));} +#define ADDERR(s) (void)strcat(fbuf, (s)); +#define ERROR {(void)strcat(fbuf, "\n");\ + (void)write(2, fbuf, strlen(fbuf)); exit(1);} +#define INITWARN(s) {(void)strcpy(fbuf, cmdname);\ + (void)strcat(fbuf, ": (warning) ");\ + (void)strcat(fbuf, (s));} +#define ADDWARN(s) (void)strcat(fbuf, (s)); +#define WARN {(void)strcat(fbuf, "\n"); (void)write(2, fbuf, strlen(fbuf));} + +int +main(argc, argv) +int argc; +char *argv[]; +{ + cmdname = *argv; + while (**argv) + if (*((*argv)++) == '/') + cmdname = *argv; /* find the command's basename */ + + if (argc > 1 && !strcmp(argv[1], "-X")) + { + compface_xbitmap++; + argc--; + argv++; + } + + if (argc > 3) + { + INITERR("usage: ") + ADDERR(cmdname) + ADDERR(" [infile [outfile]]") + ERROR + } + + if ((argc > 1) && strcmp(*++argv, "-")) + { + inname = *argv; + if ((infile = open(inname, O_RDONLY)) == -1) + { + INITERR(inname) + ADDERR(": ") + ADDERR(ERR) + ERROR + } + } + + if (argc > 2) + { + outname = *++argv; + if ((outfile = open(outname, O_WRONLY | O_CREAT | O_TRUNC, 0644)) == -1) + { + INITERR(outname) + ADDERR(": ") + ADDERR(ERR) + ERROR + } + } + + (void) ReadBuf(); + switch (uncompface(fbuf)) + { + case -2 : INITERR("internal error") + ERROR + case -1 : INITERR(inname) + ADDERR(": insufficient or invalid data") + ERROR + case 1 : INITWARN(inname) + ADDWARN(": excess data ignored") + WARN + default : ; + } + (void) WriteBuf(); + exit(0); +/*NOTREACHED*/ +} + + +int +WriteBuf() +{ + register char *s, *t; + register int len; + + s = fbuf; + t = s + strlen(s); + while (s < t) + { + if ((len = write(outfile, s, t - s)) == -1) + { + INITERR(outname) + ADDERR(": ") + ADDERR(ERR) + ERROR + } + s += len; + } + return 0; +} + + +int +ReadBuf() +{ + register int count, len; + register char *t; + + count = 0; + t = fbuf; + while (len = read(infile, t, FACEBUFLEN - count)) + { + if (len == -1) + { + INITERR(inname) + ADDERR(": ") + ADDERR(ERR) + ERROR + } + t += len; + if ((count += len) >= FACEBUFLEN) + { + INITWARN(inname) + ADDWARN(" exceeds internal buffer size. Data may be lost") + WARN + break; + } + } + *t = '\0'; + return count; +} + +#ifdef HAVE_STRERROR +char *strerrorwrap(err) +int err; +{ + char *c = strerror(err); + return ((c) ? (c) : "" ); +} +#endif + |