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Cleanup memory usage

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This commit is contained in:
Glenn L McGrath 2003-09-14 15:24:18 +00:00
parent 7bf8f5bc5e
commit 8417c8c38b
1 changed files with 32 additions and 17 deletions
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49
editors/sed.c
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@ -153,6 +153,10 @@ static void destroy_cmd_strs(void)
free(sed_cmd->sub_match);
}
free(sed_cmd->replace);
free(sed_cmd->editline);
free(sed_cmd->filename);
free(sed_cmd->translate);
free(sed_cmd->label);
free(sed_cmd);
sed_cmd = sed_cmd_next;
}
@ -803,7 +807,6 @@ static void process_file(FILE * file)
/* Read one line in advance so we can act on the last line, the '$' address */
next_line = bb_get_chomped_line_from_file(file);
linenum++;
altered = 0;
force_print = 0;
@ -981,10 +984,12 @@ static void process_file(FILE * file)
next_line = NULL;
break;
case 'n': /* Read next line from input */
free(pattern_space);
pattern_space = next_line;
next_line = bb_get_chomped_line_from_file(file);
linenum++;
if (next_line) {
free(pattern_space);
pattern_space = next_line;
next_line = bb_get_chomped_line_from_file(file);
linenum++;
}
break;
case 'N': /* Append the next line to the current line */
if (next_line) {
@ -1043,17 +1048,25 @@ static void process_file(FILE * file)
hold_space = strdup(pattern_space);
break;
case 'H': { /* Append newline and pattern space to hold space */
int hold_space_size = 0;
int hold_space_size = 2;
int pattern_space_size = 0;
if (hold_space) {
hold_space_size = strlen(hold_space);
hold_space_size += strlen(hold_space);
}
hold_space = xrealloc(hold_space, hold_space_size + strlen(pattern_space) + 2);
if (hold_space_size) {
strcat(hold_space, "\n");
if (pattern_space) {
pattern_space_size = strlen(pattern_space);
}
hold_space = xrealloc(hold_space, hold_space_size + pattern_space_size);
if (hold_space_size == 2) {
strcpy(hold_space, "\n");
} else {
hold_space[0] = '\n';
strcat(hold_space, "\n");
}
if (pattern_space) {
strcat(hold_space, pattern_space);
}
strcat(hold_space, pattern_space);
break;
}
case 'x':{
@ -1116,10 +1129,12 @@ extern int sed_main(int argc, char **argv)
{
int opt, status = EXIT_SUCCESS;
#if 0 /* This doesnt seem to be working */
#ifdef CONFIG_FEATURE_CLEAN_UP
/* destroy command strings on exit */
if (atexit(destroy_cmd_strs) == -1)
bb_perror_msg_and_die("atexit");
#endif
#endif
/* do normal option parsing */
@ -1129,10 +1144,7 @@ extern int sed_main(int argc, char **argv)
be_quiet++;
break;
case 'e':{
char *str_cmd = strdup(optarg);
add_cmd_str(str_cmd);
free(str_cmd);
add_cmd_str(optarg);
break;
}
case 'f':
@ -1149,7 +1161,7 @@ extern int sed_main(int argc, char **argv)
if (argv[optind] == NULL)
bb_show_usage();
else
add_cmd_str(strdup(argv[optind++]));
add_cmd_str(argv[optind++]);
}
/* argv[(optind)..(argc-1)] should be names of file to process. If no
@ -1176,5 +1188,8 @@ extern int sed_main(int argc, char **argv)
}
}
#ifdef CONFIG_FEATURE_CLEAN_UP
destroy_cmd_strs();
#endif
return status;
}