diff options
Diffstat (limited to 'gdb/utils.c')
| -rw-r--r-- | gdb/utils.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gdb/utils.c b/gdb/utils.c index b70edd8..15956b7 100644 --- a/gdb/utils.c +++ b/gdb/utils.c @@ -3724,6 +3724,48 @@ dirnames_to_char_ptr_vec (const char *dirnames) return retval; } +/* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP + must come from xrealloc-compatible allocator and it may be updated. FROM + needs to be delimited by IS_DIR_SEPARATOR (or be located at the start or + end of *STRINGP. */ + +void +substitute_path_component (char **stringp, const char *from, const char *to) +{ + char *string = *stringp, *s; + const size_t from_len = strlen (from); + const size_t to_len = strlen (to); + + for (s = string;;) + { + s = strstr (s, from); + if (s == NULL) + break; + + if ((s == string || IS_DIR_SEPARATOR (s[-1])) + && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len]))) + { + char *string_new; + + string_new = xrealloc (string, (strlen (string) + to_len + 1)); + + /* Relocate the current S pointer. */ + s = s - string + string_new; + string = string_new; + + /* Replace from by to. */ + memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1); + memcpy (s, to, to_len); + + s += to_len; + } + else + s++; + } + + *stringp = string; +} + #ifdef HAVE_WAITPID #ifdef SIGALRM |