feat(lnm): write server init code

lnm/src/_include/lnm/http/loop_internal.h

@@ -0,0 +1,34 @@
+#ifndef LNM_HTTP_LOOP_INTERNAL
+#define LNM_HTTP_LOOP_INTERNAL
+
+#include <regex.h>
+
+#include "lnm/http/loop.h"
+
+typedef struct lnm_http_conn {
+
+} lnm_http_conn;
+
+typedef struct lnm_http_step {
+  lnm_http_step_fn fn;
+  struct lnm_http_step *next;
+} lnm_http_step;
+
+typedef enum lnm_http_route_type {
+  lnm_http_route_type_literal = 0,
+  lnm_http_route_type_regex,
+} lnm_http_route_type;
+
+typedef struct lnm_http_route {
+  union {
+    regex_t *regex;
+    const char *s;
+  } route;
+  lnm_http_route_type type;
+  int regex_group_count;
+  lnm_http_step *step;
+} lnm_http_route;
+
+lnm_err lnm_http_route_init(lnm_http_route **out);
+
+#endif

lnm/src/http/lnm_http_loop.c

@@ -0,0 +1,86 @@
+#include <stdlib.h>
+
+#include "lnm/common.h"
+#include "lnm/http/loop.h"
+#include "lnm/http/loop_internal.h"
+#include "lnm/loop_internal.h"
+
+lnm_err lnm_http_loop_init(lnm_http_loop **out) {
+  lnm_http_loop *hl = calloc(1, sizeof(lnm_http_loop));
+
+  if (hl == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  *out = hl;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_step_init(lnm_http_step **out, lnm_http_step_fn fn) {
+  lnm_http_step *step = calloc(1, sizeof(lnm_http_step));
+
+  if (step == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  step->fn = fn;
+  *out = step;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_step_append(lnm_http_step **out, lnm_http_step *step,
+                             lnm_http_step_fn fn) {
+  LNM_RES(lnm_http_step_init(out, fn));
+
+  step->next = *out;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_route_init(lnm_http_route **out) {
+  lnm_http_route *route = calloc(1, sizeof(lnm_http_route));
+
+  if (route == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  *out = route;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_route_init_literal(lnm_http_route **out, const char *path,
+                                    lnm_http_step *step) {
+  LNM_RES(lnm_http_route_init(out));
+
+  (*out)->type = lnm_http_route_type_literal;
+  (*out)->route.s = path;
+  (*out)->step = step;
+
+  return lnm_err_ok;
+}
+
+lnm_err lnm_http_route_init_regex(lnm_http_route **out, const char *pattern,
+                                  int regex_group_count, lnm_http_step *step) {
+  regex_t *regex = calloc(1, sizeof(regex_t));
+
+  if (regex == NULL) {
+    return lnm_err_failed_alloc;
+  }
+
+  if (regcomp(regex, pattern, REG_EXTENDED) != 0) {
+    free(regex);
+    return lnm_err_bad_regex;
+  }
+
+  LNM_RES2(lnm_http_route_init(out), free(regex));
+
+  (*out)->type = lnm_http_route_type_regex;
+  (*out)->route.regex = regex;
+  (*out)->regex_group_count = regex_group_count;
+  (*out)->step = step;
+
+  return lnm_err_ok;
+}