DeforaOS/utils
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Code cleanup

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This commit is contained in:
Pierre Pronchery 2006-10-27 11:04:08 +00:00
parent a3c61e5358
commit c6bb475430
1 changed files with 15 additions and 12 deletions
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27
src/head.c
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@ -9,20 +9,26 @@
/* head */ /* head */
static int _head_error(char const * message, int ret);
static int _head_do(int flgn, char * filename); static int _head_do(int flgn, char * filename);
static int _head(int flgn, int argc, char * argv[]) static int _head(int flgn, int argc, char * argv[])
{ {
int res = 0; int ret = 0;
int i; int i;
if(argc == 0) if(argc == 0)
return _head_do(flgn, NULL); return _head_do(flgn, NULL);
for(i = 0; i < argc; i++) for(i = 0; i < argc; i++)
{
if(_head_do(flgn, argv[i]) != 0) if(_head_do(flgn, argv[i]) != 0)
res = 2; ret = 1;
} return ret;
return res; }
static int _head_error(char const * message, int ret)
{
fprintf(stderr, "%s", "head: ");
perror(message);
return ret;
} }
static int _head_do(int flgn, char * filename) static int _head_do(int flgn, char * filename)
@ -34,18 +40,15 @@ static int _head_do(int flgn, char * filename)
if(filename == NULL) if(filename == NULL)
fp = stdin; fp = stdin;
else if((fp = fopen(filename, "r")) == NULL) else if((fp = fopen(filename, "r")) == NULL)
{ return _head_error(filename, 1);
perror(filename);
return 1;
}
while((c = fgetc(fp)) != EOF && n < flgn) while((c = fgetc(fp)) != EOF && n < flgn)
{ {
if(c == '\n') if(c == '\n')
n++; n++;
fwrite(&c, sizeof(char), 1, stdout); fwrite(&c, sizeof(char), 1, stdout);
} }
if(filename != NULL) if(filename != NULL && fclose(fp) != 0)
fclose(fp); return _head_error(filename, 1);
return 0; return 0;
} }
@ -77,5 +80,5 @@ int main(int argc, char * argv[])
default: default:
return _usage(); return _usage();
} }
return _head(flgn, argc - optind, &argv[optind]); return _head(flgn, argc - optind, &argv[optind]) == 0 ? 0 : 2;
} }