diff options
Diffstat (limited to 'src/getstring.c')
| -rw-r--r-- | src/getstring.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/getstring.c b/src/getstring.c index 186598d..526e9ba 100644 --- a/src/getstring.c +++ b/src/getstring.c @@ -280,7 +280,13 @@ enum getstr getstring(WINDOW * win, char *str, int l, int x, int y) return st.len == 0 ? GETSTRING_RET : GETSTRING_VALID; } -/* Update an already existing string. */ +/* + * Safe edit of a dynamically allocated string. + * A copy of the original is edited. The internal buffer size + * is the only limit on the length of the edited string. After editing + * additional memory is allocated for the original if needed. The original + * remains intact if editing is interrupted. + */ int updatestring(WINDOW * win, char **str, int x, int y) { int len = strlen(*str); @@ -299,8 +305,8 @@ int updatestring(WINDOW * win, char **str, int x, int y) *str = mem_realloc(*str, len + 1, 1); EXIT_IF(*str == NULL, _("out of memory")); memcpy(*str, buf, len + 1); - } - + } else if (ret == GETSTRING_RET) + **str = '\0'; mem_free(buf); return ret; } |