str_extra.c

commit fcce88f57c77d39be3a8fc87b6f3d6032179bbe2
parent 9ddfa86916806e26a5fd1662e0720a3bfc13822b
Author: finwo <finwo@pm.me>
Date:   Wed, 16 Aug 2023 23:05:32 +0200

Added str_isHex method

Diffstat:
M
config.mk
 | 
1
+
M
package.ini
 | 
1
+
A
src/str_isHex.c
 | 
20
++++++++++++++++++++
A
src/str_isHex.h
 | 
4
++++

4 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/config.mk b/config.mk
@@ -1 +1,2 @@
 SRC+=__DIRNAME/src/strnstr.c
+SRC+=__DIRNAME/src/str_isHex.c
diff --git a/package.ini b/package.ini
@@ -1,6 +1,7 @@
 [export]
 config.mk=config.mk
 include/finwo/strnstr.h=src/strnstr.h
+include/finwo/str_isHex.h=src/str_isHex.h
 
 [package]
 deps=lib
diff --git a/src/str_isHex.c b/src/str_isHex.c
@@ -0,0 +1,20 @@
+#include <stdlib.h>
+#include <string.h>
+
+#include "str_isHex.h"
+
+bool str_isHex(const char *subject) {
+  int i;
+  size_t l = strlen(subject);
+  for(i = 0 ; i < l ; i++) {
+    if (
+      (subject[i] >= 'a' && subject[i] <= 'f') ||
+      (subject[i] >= 'A' && subject[i] <= 'F') ||
+      (subject[i] >= '0' && subject[i] <= '9')
+    ) {
+      continue;
+    }
+    return false;
+  }
+  return true;
+}
diff --git a/src/str_isHex.h b/src/str_isHex.h
@@ -0,0 +1,4 @@
+#include <stdlib.h>
+#include <stdbool.h>
+
+bool str_isHex(const char *subject);