[Pkg-gnupg-commit] [gnupg2] 71/102: common: New function split_fields.
Daniel Kahn Gillmor
dkg at fifthhorseman.net
Fri Jun 17 00:14:56 UTC 2016
This is an automated email from the git hooks/post-receive script.
dkg pushed a commit to branch experimental
in repository gnupg2.
commit 5ba99d9302cd86aee99958b71075d5288bb430aa
Author: Werner Koch <wk at gnupg.org>
Date: Sat Jun 11 12:09:48 2016 +0200
common: New function split_fields.
* common/stringhelp.c (split_fields): New.
* common/t-stringhelp.c: Include assert.h.
(test_split_fields): New.
(main): Call test.
Signed-off-by: Werner Koch <wk at gnupg.org>
---
common/stringhelp.c | 38 +++++++++++++++++++++++++
common/stringhelp.h | 4 +++
common/t-stringhelp.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 120 insertions(+)
diff --git a/common/stringhelp.c b/common/stringhelp.c
index 8b47a1c..0e96c9e 100644
--- a/common/stringhelp.c
+++ b/common/stringhelp.c
@@ -1329,6 +1329,44 @@ strtokenize (const char *string, const char *delim)
}
+/* Split a string into space delimited fields and remove leading and
+ * trailing spaces from each field. A pointer to each field is stored
+ * in ARRAY. Stop splitting at ARRAYSIZE fields. The function
+ * modifies STRING. The number of parsed fields is returned.
+ * Example:
+ *
+ * char *fields[2];
+ * if (split_fields (string, fields, DIM (fields)) < 2)
+ * return // Not enough args.
+ * foo (fields[0]);
+ * foo (fields[1]);
+ */
+int
+split_fields (char *string, char **array, int arraysize)
+{
+ int n = 0;
+ char *p, *pend;
+
+ for (p = string; *p == ' '; p++)
+ ;
+ do
+ {
+ if (n == arraysize)
+ break;
+ array[n++] = p;
+ pend = strchr (p, ' ');
+ if (!pend)
+ break;
+ *pend++ = 0;
+ for (p = pend; *p == ' '; p++)
+ ;
+ }
+ while (*p);
+
+ return n;
+}
+
+
/* Version number parsing. */
diff --git a/common/stringhelp.h b/common/stringhelp.h
index d9225a3..b6f4167 100644
--- a/common/stringhelp.h
+++ b/common/stringhelp.h
@@ -148,6 +148,10 @@ char **strsplit (char *string, char delim, char replacement, int *count);
/* Tokenize STRING using the set of delimiters in DELIM. */
char **strtokenize (const char *string, const char *delim);
+/* Split STRING into space delimited fields and store them in the
+ * provided ARRAY. */
+int split_fields (char *string, char **array, int arraysize);
+
/* Return True if MYVERSION is greater or equal than REQ_VERSION. */
int compare_version_strings (const char *my_version, const char *req_version);
diff --git a/common/t-stringhelp.c b/common/t-stringhelp.c
index b4a41ac..db0e811 100644
--- a/common/t-stringhelp.c
+++ b/common/t-stringhelp.c
@@ -34,6 +34,7 @@
#include <stdlib.h>
#include <string.h>
#include <errno.h>
+#include <assert.h>
#ifdef HAVE_PWD_H
# include <pwd.h>
#endif
@@ -676,6 +677,82 @@ test_strtokenize (void)
}
}
+
+static void
+test_split_fields (void)
+{
+ struct {
+ const char *s;
+ int nfields;
+ const char *fields_expected[10];
+ } tv[] = {
+ {
+ "a bc cde fghi jklmn foo ", 6,
+ { "a", "bc", "cde", "fghi", "jklmn", "foo", NULL }
+ },
+ {
+ " a bc def ", 2,
+ { "a", "bc", "def", NULL }
+ },
+ {
+ " a bc def ", 3,
+ { "a", "bc", "def", NULL }
+ },
+ {
+ " a bc def ", 4,
+ { "a", "bc", "def", NULL }
+ },
+ {
+ "", 0,
+ { NULL }
+ }
+ };
+
+ int tidx;
+ char *fields[10];
+ int field_count_expected, nfields, field_count, i;
+ char *s2;
+
+ for (tidx = 0; tidx < DIM(tv); tidx++)
+ {
+ nfields = tv[tidx].nfields;
+ assert (nfields <= DIM (fields));
+
+ /* Count the fields. */
+ for (field_count_expected = 0;
+ tv[tidx].fields_expected[field_count_expected];
+ field_count_expected ++)
+ ;
+ if (field_count_expected > nfields)
+ field_count_expected = nfields;
+
+ /* We need to copy s since split_fields modifies in place. */
+ s2 = xstrdup (tv[tidx].s);
+ field_count = split_fields (s2, fields, nfields);
+
+ if (field_count != field_count_expected)
+ {
+ printf ("%s: tidx %d: expected %d, got %d\n",
+ __func__, tidx, i, field_count_expected, field_count);
+ fail (tidx * 1000);
+ }
+ else
+ {
+ for (i = 0; i < field_count_expected; i ++)
+ if (strcmp (tv[tidx].fields_expected[i], fields[i]))
+ {
+ printf ("%s: tidx %d, field %d: expected '%s', got '%s'\n",
+ __func__,
+ tidx, i, tv[tidx].fields_expected[i], fields[i]);
+ fail (tidx * 1000 + i + 1);
+ }
+ }
+
+ xfree (s2);
+ }
+}
+
+
static char *
stresc (char *s)
{
@@ -887,6 +964,7 @@ main (int argc, char **argv)
test_make_absfilename_try ();
test_strsplit ();
test_strtokenize ();
+ test_split_fields ();
test_compare_version_strings ();
test_format_text ();
--
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