Small Programs sample source codes(Translate all DOT'S -056, except for the last one)

Small Programs sample source codes(Translate all DOT'S -056, except for the last one)

Translate all DOT'S -056, except for the last one

#include <>
#include <>
#include <>

#define PACKAGE "dedot"
#define VERSION "1.0.0"
#define MAXLINE 1024

void print_help(int exval);

int main(int argc, char *argv[]) {
char line[MAXLINE];
char *ptr = NULL; /* points to the last dot */
char sub_char[1]; /* substidute char */
int sub_set = 0; /* substitude set ? */
int all_flag = 0; /* print all lines, even the ones not subject to change */
/* 1=on, 0=off */
int i = 0;
int opt;

while((opt = getopt(argc, argv, "hac:")) != -1) {
switch(opt) {
case 'h':
print_help(0);
break;
case 'a':
all_flag = 1;
break;
case 'c':
sub_set = 1;
strncpy(sub_char, optarg, 1);
break;
case ':':
fprintf(stderr, "%s: Option `%c' needs an argument `-c CHAR' ?\n\n",
PACKAGE, optopt);
print_help(1);
break;
case '?':
fprintf(stderr, "%s: No such option `%c'\n\n", PACKAGE, optopt);
print_help(1);
break;
} /* switch */
} /* while */

while((fgets(line, 1024, stdin)) != NULL) {
if((ptr = strrchr(line, '.')) == NULL) {
if(all_flag == 1)
printf("%s", line);

continue;
}

for(i = 0; i < strlen(line); i++)
if(sub_set == 1 && line[i] == '.' && &line[i] != ptr)
printf("%c", sub_char[0]);
else if(line[i] != '.' || &line[i] == ptr)
printf("%c", line[i]);
}

return 0;
}

void print_help(int exval) {
printf("%s,%s remove every dot `.' exept for the last one\n", PACKAGE, VERSION);
printf("%s [-h] [-c CHAR]\n\n", PACKAGE);

printf(" -h print this help and exit\n");
printf(" -c CHAR substitude all dots EXCEPT the last one with character `CHAR'\n");
printf(" -a print all lines, even the ones which are not subject of change\n\n");

exit(exval);
}

Read more: http://cmagical.blogspot.com/2010_02_14_archive.html#ixzz0xgXcuCoR
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