* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
-#define _GNU_SOURCE
#include <stdio.h>
#include <glib.h>
{
gchar *ptr;
gchar c;
- gboolean in_quote = FALSE;
- gboolean escaped = FALSE;
+ gboolean escaped = FALSE, fresh = TRUE;
gchar quote_char = '\0';
GString *str;
ptr = (gchar *) cmdline;
while ((c = *ptr++) != '\0') {
if (escaped) {
- escaped = FALSE;
- if (!g_ascii_isspace (c))
+ /*
+ * \CHAR is only special inside a double quote if CHAR is
+ * one of: $`"\ and newline
+ */
+ if (quote_char == '\"'){
+ if (!(c == '$' || c == '`' || c == '"' || c == '\\'))
+ g_string_append_c (str, '\\');
g_string_append_c (str, c);
- } else if (in_quote) {
+ } else {
+ if (!g_ascii_isspace (c))
+ g_string_append_c (str, c);
+ }
+ escaped = FALSE;
+ } else if (quote_char) {
if (c == quote_char) {
- in_quote = FALSE;
quote_char = '\0';
- g_ptr_array_add (array, g_string_free (str, FALSE));
- str = g_string_new ("");
- } else {
+ if (fresh && g_ascii_isspace (*ptr)){
+ g_ptr_array_add (array, g_string_free (str, FALSE));
+ str = g_string_new ("");
+ }
+ } else if (c == '\\'){
+ escaped = TRUE;
+ } else
g_string_append_c (str, c);
- }
} else if (g_ascii_isspace (c)) {
if (str->len > 0) {
g_ptr_array_add (array, g_string_free (str, FALSE));
} else if (c == '\\') {
escaped = TRUE;
} else if (c == '\'' || c == '"') {
- in_quote = TRUE;
+ fresh = str->len == 0;
quote_char = c;
} else {
g_string_append_c (str, c);
return -1;
}
- if (in_quote) {
+ if (quote_char) {
if (error)
*error = g_error_new (G_LOG_DOMAIN, 0, "Unfinished quote.");
g_string_free (str, TRUE);
return TRUE;
}
+gchar *
+g_shell_quote (const gchar *unquoted_string)
+{
+ GString *result = g_string_new ("'");
+ const gchar *p;
+
+ for (p = unquoted_string; *p; p++){
+ if (*p == '\'')
+ g_string_append (result, "'\\'");
+ g_string_append_c (result, *p);
+ }
+ g_string_append_c (result, '\'');
+ return g_string_free (result, FALSE);
+}
+
+gchar *
+g_shell_unquote (const gchar *quoted_string, GError **error)
+{
+ GString *result;
+ const char *p;
+ int do_unquote = 0;
+
+ if (quoted_string == NULL)
+ return NULL;
+
+ /* Quickly try to determine if we need to unquote or not */
+ for (p = quoted_string; *p; p++){
+ if (*p == '\'' || *p == '"' || *p == '\\'){
+ do_unquote = 1;
+ break;
+ }
+ }
+
+ if (!do_unquote)
+ return g_strdup (quoted_string);
+
+ /* We do need to unquote */
+ result = g_string_new ("");
+ for (p = quoted_string; *p; p++){
+
+ if (*p == '\''){
+ /* Process single quote, not even \ is processed by glib's version */
+ for (p++; *p; p++){
+ if (*p == '\'')
+ break;
+ g_string_append_c (result, *p);
+ }
+ if (!*p){
+ g_set_error (error, 0, 0, "Open quote");
+ return NULL;
+ }
+ } else if (*p == '"'){
+ /* Process double quote, allows some escaping */
+ for (p++; *p; p++){
+ if (*p == '"')
+ break;
+ if (*p == '\\'){
+ p++;
+ if (*p == 0){
+ g_set_error (error, 0, 0, "Open quote");
+ return NULL;
+ }
+ switch (*p){
+ case '$':
+ case '"':
+ case '\\':
+ case '`':
+ break;
+ default:
+ g_string_append_c (result, '\\');
+ break;
+ }
+ }
+ g_string_append_c (result, *p);
+ }
+ if (!*p){
+ g_set_error (error, 0, 0, "Open quote");
+ return NULL;
+ }
+ } else if (*p == '\\'){
+ char c = *(++p);
+ if (!(c == '$' || c == '"' || c == '\\' || c == '`' || c == 0))
+ g_string_append_c (result, '\\');
+ if (c == 0)
+ break;
+ else
+ g_string_append_c (result, c);
+ } else
+ g_string_append_c (result, *p);
+ }
+ return g_string_free (result, FALSE);
+}
+
+#if JOINT_TEST
+/*
+ * This test is designed to be built with the 2 glib/eglib to compare
+ */
+
+char *args [] = {
+ "\\",
+ "\"Foo'bar\"",
+ "'foo'",
+ "'fo\'b'",
+ "'foo\"bar'",
+ "'foo' dingus bar",
+ "'foo' 'bar' 'baz'",
+ "\"foo\" 'bar' \"baz\"",
+ "\"f\\$\\\'",
+ "\"\\",
+ "\\\\",
+ "'\\\\'",
+ "\"f\\$\"\\\"\\\\", // /\\\"\\\\"
+ "'f\\$'\\\"\\\\",
+ "'f\\$\\\\'",
+ NULL
+};
+
+
+int
+main ()
+{
+ char **s = args;
+ int i;
+
+ while (*s){
+ char *r1 = g_shell_unquote (*s, NULL);
+ char *r2 = g2_shell_unquote (*s, NULL);
+ char *ok = r1 == r2 ? "ok" : (r1 != NULL && r2 != NULL && strcmp (r1, r2) == 0) ? "ok" : "fail";
+
+ printf ("%s [%s] -> [%s] - [%s]\n", ok, *s, r1, r2);
+ s++;
+ }
+ return;
+ char buffer [10];
+ buffer [0] = '\"';
+ buffer [1] = '\\';
+ buffer [3] = '\"';
+ buffer [4] = 0;
+
+ for (i = 32; i < 255; i++){
+ buffer [2] = i;
+ printf ("%d [%s] -> [%s]\n", i, buffer, g_shell_unquote (buffer, NULL));
+ }
+}
+#endif
projects / mono.git / blobdiff