Move center_text function into utils.c/utils.h

* Remove 'v' prefix
* Print version the same way in the indexer

2 files changed, 34 insertions, 0 deletions

diff --git a/src/lib/core/include/utils.h b/src/lib/core/include/utils.h
index 22835ee..3bd0785 100644
--- a/src/lib/core/include/utils.h
+++ b/src/lib/core/include/utils.h
@@ -490,4 +490,5 @@ int get_random_bytes(char *result, size_t maxlen);
  */
 int non_format_len(const char *s);
 
+char *center_text(const char *s, size_t maxwidth);
 #endif //STASIS_UTILS_H
diff --git a/src/lib/core/utils.c b/src/lib/core/utils.c
index 4f06d14..f18a2e5 100644
--- a/src/lib/core/utils.c
+++ b/src/lib/core/utils.c
@@ -1239,3 +1239,36 @@ int non_format_len(const char *s) {
     return len;
 }
 
+char *center_text(const char *s, const size_t maxwidth) {
+    if (maxwidth < 2) {
+        SYSERROR("%s", "maximum width must be greater than 0");
+        return NULL;
+    }
+
+    if (maxwidth % 2 != 0) {
+        SYSERROR("maximum width (%zu) must be even", maxwidth);
+        return NULL;
+    }
+
+    const size_t s_len = strlen(s);
+    if (s_len + 1 > maxwidth) {
+        SYSERROR("length of input string (%zu) exceeds maximum width (%zu)", s_len, maxwidth);
+        return NULL;
+    }
+
+    char *result = calloc(maxwidth + 1, sizeof(*result));
+    if (!result) {
+        SYSERROR("%s", "unable to allocate bytes for centered text string");
+        return NULL;
+    }
+    const size_t middle = (maxwidth / 2) - s_len / 2;
+    size_t i = 0;
+    for (; i < middle; i++) {
+        result[i] = ' ';
+    }
+    strncpy(&result[i], s, maxwidth - middle - 1);
+    result[maxwidth] = '\0';
+
+    return result;
+}
+