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fixed xargs

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This commit is contained in:
Your Name 2025-05-04 23:02:42 +03:00
parent ad0d7d25ff
commit 035d64a2fb
1 changed files with 27 additions and 23 deletions
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50
src/xargs.c
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@ -14,7 +14,8 @@
#define ARG_MAX 10000
#endif
static int args;
static int args_main;
static int args_added;
static char *cmd[ARG_MAX + 1];
static char *I_flag;
@ -30,7 +31,7 @@ enum {
NORMAL,
CEOF,
ERROR,
I_FLAG
STOP
};
enum {
@ -39,28 +40,33 @@ enum {
};
static void clear_cmd(void) {
for (int i = 0; i < args; i++) {
for (int i = 0; i < args_main; i++) {
if (cmd[i] != NULL) {
free(cmd[i]);
cmd[i] = NULL;
}
}
args = 0;
args_main = 0;
args_added = 0;
}
static int add_arg(const char *str, size_t chars, int flag) {
if (args >= ARG_MAX)
static int add_arg(const char *str, size_t chars, const char flag) {
if (!flag)
args_added++;
int ret = NORMAL;
if (args_main >= ARG_MAX)
return ERROR;
else if (n_flag > 0 && args > n_flag && I_flag == NULL)
return ERROR;
else if (n_flag > 0 && args_added == n_flag && I_flag == NULL)
ret = STOP;
else if (s_flag > 0 && chars > s_flag)
return ERROR;
else if (s_flag > 0 && chars >= s_flag)
ret = STOP;
if (!flag && I_flag) {
for (int i = 0; i < args; i++)
for (int i = 0; i < args_main; i++)
if (strstr(cmd[i], I_flag)) {
char *ptr = NULL;
CONTINUE:
@ -76,13 +82,13 @@ CONTINUE:
goto CONTINUE;
}
return I_FLAG;
return STOP;
}
cmd[args] = strdup(str);
args++;
cmd[args_main] = strdup(str);
args_main++;
return NORMAL;
return ret;
}
static int is_correct(char c) {
@ -137,7 +143,7 @@ static int xargs(void) {
break;
}
else if (r == I_FLAG) {
else if (r == STOP) {
free(arg);
return NORMAL;
}
@ -193,7 +199,7 @@ static int xargs(void) {
static int spawn(void) {
if (t_flag) {
for (int i = 0; i < args; i++)
for (int i = 0; i < args_main; i++)
fprintf(stderr, "%s ", cmd[i]);
fputc('\n', stderr);
@ -299,7 +305,7 @@ int main(int argc, char **argv) {
ret = 1;
/* Check NULL */
for (int i = 0; i < args; i++) {
for (int i = 0; i < args_main; i++) {
if (cmd[i] == NULL) {
fprintf(stderr, "xargs: strdup failed\n");
clear_cmd();
@ -310,12 +316,10 @@ int main(int argc, char **argv) {
}
/* Run */
if (stdin_stat == CEOF && I_flag == NULL) {
if (!r_flag)
ret = spawn();
}
if (stdin_stat == NORMAL)
ret = spawn();
else if (stdin_stat == NORMAL)
else if (!r_flag && args_added == 0)
ret = spawn();
clear_cmd();