Initial revision

src/stringhelper.c

@@ -0,0 +1,71 @@
+// SPDX-FileCopyrightText: 2022 Geoffrey D. Bennett <g@b4.vu>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "stringhelper.h"
+
+// return the first number found in the string
+int get_num_from_string(const char *s) {
+  int num;
+
+  while (*s) {
+    if (isdigit(*s))
+      break;
+    s++;
+  }
+
+  if (!*s)
+    return -1;
+
+  if (!sscanf(s, "%d", &num))
+    return 0;
+
+  return num;
+}
+
+// return the first two numbers found in the string
+void get_two_num_from_string(const char *s, int *a, int *b) {
+  *a = -1;
+  *b = -1;
+
+  while (*s) {
+    if (isdigit(*s))
+      break;
+    s++;
+  }
+
+  if (!*s)
+    return;
+
+  if (!sscanf(s, "%d", a))
+    return;
+
+  while (*s) {
+    if (!isdigit(*s))
+      break;
+    s++;
+  }
+
+  while (*s) {
+    if (isdigit(*s))
+      break;
+    s++;
+  }
+
+  if (!sscanf(s, "%d", b))
+    return;
+}
+
+// check if the given string ends with the given suffix
+int string_ends_with(const char *s, const char *suffix) {
+  if (!s || !suffix)
+    return 0;
+  int s_len = strlen(s);
+  int suffix_len = strlen(suffix);
+  if (s_len < suffix_len)
+    return 0;
+  return strcmp(s + s_len - suffix_len, suffix) == 0;
+}