initialized rewrite

1 files changed, 60 insertions, 0 deletions

diff --git a/src/pkgit_string.c b/src/pkgit_string.c
new file mode 100644
index 0000000..cbcc200
--- /dev/null
+++ b/src/pkgit_string.c
@@ -0,0 +1,60 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "pkgit_string.h"
+
+void print_slice(str_s slice) {
+	for (size_t i = 0; i < slice.len; i++) {
+		putchar(slice.data[i]);
+	}
+}
+
+str_s slice_from_cstr(char* cstr) {
+	return (str_s) {
+		.data = cstr,
+		.len = strlen(cstr),
+	};
+}
+
+int slice_eq(str_s a, str_s b) {
+	if (a.len != b.len) return 0;
+	for (size_t i = 0; i < a.len; i++) {
+		if (a.data[i] != b.data[i]) return 0;
+	}
+	return 1;
+}
+
+int slice_starts_with(str_s slice, str_s prefix) {
+	if (prefix.len > slice.len) return 0;
+	for (size_t i = 0; i < prefix.len; i++) {
+		if (slice.data[i] != prefix.data[i]) return 0;
+	}
+	return 1;
+}
+
+str_s slice_take(str_s slice, size_t n) {
+	if (n > slice.len) n = slice.len;
+	return (str_s) {
+		.data = slice.data,
+		.len = n
+	};
+}
+
+str_s slice_drop(str_s slice, size_t n) {
+	if (n > slice.len) n = slice.len;
+	return (str_s) {
+		.data = slice.data + n,
+		.len = slice.len - n
+	};
+}
+
+str_s slice_trim(str_s slice) {
+	while (slice.len > 0 && isspace((unsigned char)slice.data[0])) {
+		slice = slice_drop(slice, 1);
+	}
+	while (slice.len > 0 && isspace((unsigned char)slice.data[slice.len - 1])) {
+		slice = slice_take(slice, slice.len - 1);
+	}
+	return slice;
+}