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Initial release

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This commit is contained in:
Pierre Pronchery 2004-09-17 14:06:11 +00:00
parent abc534cdb3
commit dc967f3348
1 changed files with 45 additions and 40 deletions
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85
src/uniq.c
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@ -51,67 +51,72 @@ static int _uniq_error(char * message, int ret)
return ret;
}
static void _do_count(int opts, char * line, FILE * fp);
static int _uniq_do(int opts, char * fields, int chars,
FILE * infp, FILE * outfp)
{
char * lastline = NULL;
#define BUF 80
char * line = NULL;
int len = 0;
char * p;
unsigned int cnt = 1;
#define BUF 80
for(;;)
{
if((p = realloc(line, sizeof(char) * (len + BUF))) == NULL)
if((p = realloc(line, len + BUF + 1)) == NULL)
{
free(lastline);
free(line);
return _uniq_error("malloc", 2);
_uniq_error("malloc", 0);
return 2;
}
line = p;
if(fgets(&line[len], BUF, infp) == NULL) /* FIXME */
if(fgets(&line[len], BUF + 1, infp) == NULL)
{
free(lastline);
free(line);
return _uniq_error("fread", 2);
if(!feof(infp))
_uniq_error("fread", 0);
break;
}
for(p = &line[len]; *p != '\0' && *p != '\n'; p++);
if(*p == '\0')
{
len += BUF;
if(p == line + BUF)
continue;
}
*p = '\0';
if(lastline == NULL)
{
lastline = line;
line = NULL;
len = 0;
continue;
}
if(strcmp(lastline, line) == 0)
{
cnt++;
continue;
}
if(cnt == 1 && !(opts & OPTS_d)) /* line is not repeated */
printf("%s%s\n", opts & OPTS_c ? "1 " : "", lastline);
else if(cnt > 1 && !(opts & OPTS_u)) /* line is repeated */
{
if(opts & OPTS_c)
printf("%d ", cnt);
printf("%s\n", lastline);
}
free(lastline);
lastline = line;
if(*p == '\n')
*p = '\0';
#ifdef DEBUG
fprintf(stderr, "%s%s%s", "DEBUG: Got line \"", line, "\"\n");
#endif
_do_count(opts, line, outfp);
line = NULL;
len = 0;
cnt = 1;
}
_do_count(opts, NULL, outfp);
return 0;
}
static void _do_count(int opts, char * line, FILE * fp)
{
static char * lastline = NULL;
static unsigned int cnt = 1;
if(lastline == NULL)
{
lastline = line;
return;
}
if(line != NULL && strcmp(lastline, line) == 0)
{
cnt++;
return;
}
if(cnt == 1 && !(opts & OPTS_d)) /* line is not repeated */
fprintf(fp, "%s%s\n", opts & OPTS_c ? "1 " : "", lastline);
else if(cnt > 1 && !(opts & OPTS_u)) /* line is repeated */
{
if(opts & OPTS_c)
fprintf(fp, "%d ", cnt);
fprintf(fp, "%s\n", lastline);
}
free(lastline);
free(line);
return 0;
lastline = line;
cnt = 1;
}