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savalet
2025-02-23 18:55:26 +01:00
parent 248b7ea8a7
commit 657164bb5d
1 changed files with 32 additions and 12 deletions
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44
src/builtins.c
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@@ -11,9 +11,11 @@
#include <unistd.h>
#include "common.h"
#include "debug.h"
#include "env.h"
#include "shell.h"
#include "u_str.h"
#include "u_mem.h"
int builtins_exit(env_t *env, char **args __attribute__((unused)), char *buff,
history_t *history)
@@ -88,25 +90,43 @@ void cd_print_error(void)
}
}
static
char *get_current_dir(void)
{
size_t size = 64;
char *buffer = malloc(size);
char *new_buffer;
size_t max_it = 100;
if (!buffer)
return NULL;
while (getcwd(buffer, size) == NULL && max_it > 0) {
if (errno != ERANGE)
return (free(buffer), NULL);
size <<= 1;
new_buffer = u_realloc(buffer, u_strlen(buffer) + 1, size);
if (!new_buffer) {
free(buffer);
return NULL;
}
buffer = new_buffer;
max_it--;
}
return buffer;
}
static
int builtins_cd_chdir(char *path, history_t *history, char **args, env_t *env)
{
bool last_chdir_set = false;
if (history->last_chdir != NULL && u_strcmp(args[1], "-") == 0) {
if (history->last_chdir != NULL && u_strcmp(args[1], "-") == 0)
path = history->last_chdir;
free(history->last_chdir);
history->last_chdir = u_strdup(get_env_value(env, "PWD"));
last_chdir_set = true;
}
free(history->last_chdir);
history->last_chdir = get_current_dir();
U_DEBUG("last chdir %s\n", history->last_chdir);
if (chdir(path) < 0) {
write(STDERR_FILENO, path, u_strlen(path));
cd_print_error();
return RETURN_FAILURE;
}
if (!last_chdir_set) {
free(history->last_chdir);
history->last_chdir = u_strdup(path);
return RETURN_FAILURE;
}
return RETURN_SUCCESS;
}