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Add p format modifier for padding to width.

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This commit is contained in:
nicm
2019-11-25 15:04:15 +00:00
parent 5d0504ee11
commit 1ebd8c1234
4 changed files with 52 additions and 3 deletions
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25
format.c
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@ -1299,7 +1299,7 @@ format_build_modifiers(struct format_tree *ft, const char **s, u_int *count)
}
/* Now try single character with arguments. */
if (strchr("mCs=", cp[0]) == NULL)
if (strchr("mCs=p", cp[0]) == NULL)
break;
c = cp[0];
@ -1565,7 +1565,7 @@ format_replace(struct format_tree *ft, const char *key, size_t keylen,
char *copy0, *condition, *found, *new;
char *value, *left, *right;
size_t valuelen;
int modifiers = 0, limit = 0, j;
int modifiers = 0, limit = 0, width = 0, j;
struct format_modifier *list, *fm, *cmp = NULL, *search = NULL;
struct format_modifier **sub = NULL;
u_int i, count, nsub = 0;
@ -1611,6 +1611,14 @@ format_replace(struct format_tree *ft, const char *key, size_t keylen,
if (fm->argc >= 2 && fm->argv[1] != NULL)
marker = fm->argv[1];
break;
case 'p':
if (fm->argc < 1)
break;
width = strtonum(fm->argv[0], INT_MIN, INT_MAX,
&errptr);
if (errptr != NULL)
width = 0;
break;
case 'l':
modifiers |= FORMAT_LITERAL;
break;
@ -1845,6 +1853,19 @@ done:
format_log(ft, "applied length limit %d: %s", limit, value);
}
/* Pad the value if needed. */
if (width > 0) {
new = utf8_padcstr(value, width);
free(value);
value = new;
format_log(ft, "applied padding width %d: %s", width, value);
} else if (width < 0) {
new = utf8_rpadcstr(value, -width);
free(value);
value = new;
format_log(ft, "applied padding width %d: %s", width, value);
}
/* Expand the buffer and copy in the value. */
valuelen = strlen(value);
while (*len - *off < valuelen + 1) {