Currently, a line is interpreted to be a trailer line if it contains a
separator. Make parsing stricter by requiring the text on the left of
the separator, if not the empty string, to be of the "<token><optional
whitespace>" form.
Signed-off-by: Jonathan Tan <jonathantanmy@xxxxxxxxxx>
---
trailer.c | 27 +++++++++++++++++++++------
1 file changed, 21 insertions(+), 6 deletions(-)
diff --git a/trailer.c b/trailer.c
index f0ecde2..dc525e3 100644
--- a/trailer.c
+++ b/trailer.c
@@ -563,15 +563,30 @@ static int token_matches_item(const char *tok, struct arg_item *item, int tok_le
}
/*
- * Return the location of the first separator in line, or -1 if there is no
- * separator.
+ * If the given line is of the form
+ * "<token><optional whitespace><separator>..." or "<separator>...", return the
+ * location of the separator. Otherwise, return -1.
+ *
+ * The separator-starts-line case (in which this function returns 0) is
+ * distinguished from the non-well-formed-line case (in which this function
+ * returns -1) because some callers of this function need such a distinction.
*/
static int find_separator(const char *line, const char *separators)
{
- int loc = strcspn(line, separators);
- if (!line[loc])
- return -1;
- return loc;
+ int whitespace_found = 0;
+ const char *c;
+ for (c = line; *c; c++) {
+ if (strchr(separators, *c))
+ return c - line;
+ if (!whitespace_found && (isalnum(*c) || *c == '-'))
+ continue;
+ if (c != line && (*c == ' ' || *c == '\t')) {
+ whitespace_found = 1;
+ continue;
+ }
+ break;
+ }
+ return -1;
}
/*
--
2.8.0.rc3.226.g39d4020