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Add support for "grep -q"

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This commit is contained in:
Pierre Pronchery 2017-01-31 21:59:45 +01:00
parent 97cdc17553
commit 77b2d9ec05
1 changed files with 15 additions and 7 deletions
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12
src/grep.c
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@ -33,6 +33,8 @@
/* Prefs */
typedef int Prefs;
#define GREP_PREFS_n 0x1
#define GREP_PREFS_q 0x2
/* prototypes */
static int _grep(Prefs * prefs, int flags, char const * pattern,
@ -120,12 +122,15 @@ static int _grep_stream(Prefs * prefs, regex_t * reg, FILE * fp,
for(line = 1; fgets(buf, sizeof(buf), fp) != NULL; line++)
if((e = regexec(reg, buf, 1, &match, 0)) == 0)
{
if(prefs != NULL && !(*prefs & GREP_PREFS_q))
{
if(filename != NULL)
printf("%s:", filename);
if(prefs != NULL && *prefs & GREP_PREFS_n)
printf("%zd:", line);
printf("%s", buf);
}
if(ret == 1)
ret = 0;
}
@ -141,7 +146,7 @@ static int _grep_stream(Prefs * prefs, regex_t * reg, FILE * fp,
/* usage */
static int _usage(void)
{
fputs("Usage: " PROGNAME " [-Ein][file...]\n", stderr);
fputs("Usage: " PROGNAME " [-Einq][file...]\n", stderr);
return 1;
}
@ -155,7 +160,7 @@ int main(int argc, char * argv[])
Prefs prefs = 0;
int flags = 0;
while((o = getopt(argc, argv, "Ein")) != -1)
while((o = getopt(argc, argv, "Einq")) != -1)
switch(o)
{
case 'E':
@ -167,6 +172,9 @@ int main(int argc, char * argv[])
case 'n':
prefs |= GREP_PREFS_n;
break;
case 'q':
prefs |= GREP_PREFS_q;
break;
default:
return _usage();
}