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Con Kolivas
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204
util.c
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204
util.c
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/*
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Copyright (C) Andrew Tridgell 1998
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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 the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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Utilities used in rzip
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tridge, June 1996
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*/
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/*
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* Realloc removed
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* Functions added
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* read_config()
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* Peter Hyman, December 2008
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*/
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#include "rzip.h"
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void err_msg(const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vfprintf(stderr, format, ap);
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va_end(ap);
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}
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void fatal(const char *format, ...)
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{
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va_list ap;
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if (format) {
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va_start(ap, format);
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vfprintf(stderr, format, ap);
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va_end(ap);
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}
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/* Delete temporary files generated for testing or faking stdio */
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if (control.flags & (FLAG_TEST_ONLY | FLAG_STDOUT))
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unlink(control.outfile);
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if (control.flags & FLAG_STDIN)
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unlink(control.infile);
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fprintf(stderr, "Fatal error - exiting\n");
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exit(1);
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}
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void sighandler()
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{
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/* Delete temporary files generated for testing or faking stdio */
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if (control.flags & (FLAG_TEST_ONLY | FLAG_STDOUT))
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unlink(control.outfile);
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if (control.flags & FLAG_STDIN)
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unlink(control.infile);
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exit(0);
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}
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void read_config( struct rzip_control *control )
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{
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/* check for lrzip.conf in ., $HOME/.lrzip and /etc/lrzip */
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FILE *fp;
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char *parameter;
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char *parametervalue;
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char *line, *s;
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char *HOME, *homeconf;
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line = malloc(255);
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homeconf = malloc(255);
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if (line == NULL || homeconf == NULL)
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fatal("Fatal Memory Error in read_config");
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fp = fopen("lrzip.conf", "r");
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if (fp)
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fprintf(stderr, "Using configuration file ./lrzip.conf\n");
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if (fp == NULL) {
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fp = fopen("/etc/lrzip/lrzip.conf", "r");
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if (fp)
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fprintf(stderr, "Using configuration file /etc/lrzip/lrzip.conf\n");
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}
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if (fp == NULL) {
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HOME=getenv("HOME");
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if (HOME) {
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strcpy(homeconf, HOME);
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strcat(homeconf,"/.lrzip/lrzip.conf");
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fp = fopen(homeconf, "r");
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if (fp)
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fprintf(stderr, "Using configuration file %s\n", homeconf);
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}
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}
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if (fp == NULL)
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return;
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/* if we get here, we have a file. read until no more. */
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while ((s = fgets(line, 255, fp)) != NULL) {
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if (strlen(line))
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line[strlen(line) - 1] = '\0';
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parameter = strtok(line, " =");
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if (parameter == NULL)
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continue;
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/* skip if whitespace or # */
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if (isspace(*parameter))
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continue;
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if (*parameter == '#')
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continue;
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parametervalue = strtok(NULL, " =");
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if (parametervalue == NULL)
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continue;
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/* have valid parameter line, now assign to control */
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if (!strcasecmp(parameter, "window"))
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control->window = atoi(parametervalue);
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else if (!strcasecmp(parameter, "compressionlevel")) {
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control->compression_level = atoi(parametervalue);
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if ( control->compression_level < 1 || control->compression_level > 9 )
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fatal("CONF.FILE error. Compression Level must between 1 and 9");
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} else if (!strcasecmp(parameter, "compressionmethod")) {
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/* valid are rzip, gzip, bzip2, lzo, lzma (default) */
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if (control->flags & FLAG_NOT_LZMA)
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fatal("CONF.FILE error. Can only specify one compression method");
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if (!strcasecmp(parametervalue, "bzip2"))
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control->flags |= FLAG_BZIP2_COMPRESS;
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else if (!strcasecmp(parametervalue, "gzip"))
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control->flags |= FLAG_ZLIB_COMPRESS;
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else if (!strcasecmp(parametervalue, "lzo"))
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control->flags |= FLAG_LZO_COMPRESS;
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else if (!strcasecmp(parametervalue, "rzip"))
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control->flags |= FLAG_NO_COMPRESS;
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else if (!strcasecmp(parametervalue, "zpaq"))
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control->flags |= FLAG_ZPAQ_COMPRESS;
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else if (strcasecmp(parametervalue, "lzma"))
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fatal("CONF.FILE error. Invalid compression method %s specified",parametervalue);
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} else if (!strcasecmp(parameter, "testthreshold")) {
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control->threshold = atoi(parametervalue);
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if (control->threshold < 1 || control->threshold > 10)
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fatal("CONF.FILE error. Threshold value out of range %d", parametervalue);
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control->threshold = 1.05-control->threshold / 20;
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} else if (!strcasecmp(parameter, "outputdirectory")) {
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control->outdir = malloc(strlen(parametervalue) + 2);
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if (!control->outdir)
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fatal("Fatal Memory Error in read_config");
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strcpy(control->outdir, parametervalue);
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if (strcmp(parametervalue + strlen(parametervalue) - 1, "/"))
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strcat(control->outdir, "/");
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} else if (!strcasecmp(parameter,"verbosity")) {
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if (control->flags & FLAG_VERBOSE)
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fatal("CONF.FILE error. Verbosity already defined.");
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if (!strcasecmp(parametervalue, "true") || !strcasecmp(parametervalue, "1"))
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control->flags |= FLAG_VERBOSITY;
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else if (!strcasecmp(parametervalue,"max") || !strcasecmp(parametervalue, "2"))
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control->flags |= FLAG_VERBOSITY_MAX;
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} else if (!strcasecmp(parameter,"nice")) {
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control->nice_val = atoi(parametervalue);
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if (control->nice_val < -20 || control->nice_val > 19)
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fatal("CONF.FILE error. Nice must be between -20 and 19");
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} else if (!strcasecmp(parameter, "showprogress")) {
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/* true by default */
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if (!strcasecmp(parametervalue, "false") || !strcasecmp(parametervalue," 0"))
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control->flags &= ~FLAG_SHOW_PROGRESS;
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} else if (!strcmp(parameter, "DELETEFILES")) {
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/* delete files must be case sensitive */
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if (!strcmp(parametervalue, "YES"))
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control->flags &= ~FLAG_KEEP_FILES;
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} else if (!strcmp(parameter, "REPLACEFILE")) {
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/* replace lrzip file must be case sensitive */
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if (!strcmp(parametervalue, "YES"))
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control->flags |= FLAG_FORCE_REPLACE;
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}
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}
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/* clean up */
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free(line);
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free(homeconf);
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/* fprintf(stderr, "\nWindow = %d \
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\nCompression Level = %d \
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\nThreshold = %1.2f \
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\nOutput Directory = %s \
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\nFlags = %d\n", control->window,control->compression_level, control->threshold, control->outdir, control->flags);
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*/
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}
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