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-rw-r--r--src/chunk.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/src/chunk.h b/src/chunk.h
new file mode 100644
index 0000000..f37a2f3
--- /dev/null
+++ b/src/chunk.h
@@ -0,0 +1,92 @@
+#ifndef _CHUNK_H_
+#define _CHUNK_H_
+
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "buffer.h"
+
+typedef struct {
+ const unsigned char *data;
+ int len;
+ int alloc;
+} chunk;
+
+static inline void chunk_free(chunk *c)
+{
+ if (c->alloc)
+ free((char *)c->data);
+
+ c->data = NULL;
+ c->alloc = 0;
+ c->len = 0;
+}
+
+static inline void chunk_ltrim(chunk *c)
+{
+ assert(!c->alloc);
+
+ while (c->len && isspace(c->data[0])) {
+ c->data++;
+ c->len--;
+ }
+}
+
+static inline void chunk_rtrim(chunk *c)
+{
+ while (c->len > 0) {
+ if (!isspace(c->data[c->len - 1]))
+ break;
+
+ c->len--;
+ }
+}
+
+static inline void chunk_trim(chunk *c)
+{
+ chunk_ltrim(c);
+ chunk_rtrim(c);
+}
+
+static inline int chunk_strchr(chunk *ch, int c, int offset)
+{
+ const unsigned char *p = memchr(ch->data + offset, c, ch->len - offset);
+ return p ? (int)(p - ch->data) : ch->len;
+}
+
+static inline unsigned char *chunk_to_cstr(chunk *c)
+{
+ unsigned char *str;
+
+ str = malloc(c->len + 1);
+ memcpy(str, c->data, c->len);
+ str[c->len] = 0;
+
+ return str;
+}
+
+static inline chunk chunk_literal(const char *data)
+{
+ chunk c = {(const unsigned char *)data, data ? strlen(data) : 0, 0};
+ return c;
+}
+
+static inline chunk chunk_dup(const chunk *ch, int pos, int len)
+{
+ chunk c = {ch->data + pos, len, 0};
+ return c;
+}
+
+static inline chunk chunk_buf_detach(strbuf *buf)
+{
+ chunk c;
+
+ c.len = buf->size;
+ c.data = strbuf_detach(buf);
+ c.alloc = 1;
+
+ return c;
+}
+
+#endif