finish up translations and setup doc server stuff

doc/src/routes/read.c

@@ -0,0 +1,118 @@
+#include <linux/limits.h>
+#include <ctorm/all.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include <dirent.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <stdio.h>
+#include <errno.h>
+#include <cmark.h>
+#include <fcntl.h>
+
+#include "routes.h"
+
+void GET_read(req_t *req, res_t *res) {
+  const char *lang = REQ_QUERY("lang");
+  const char *name = REQ_QUERY("name");
+
+  char           fp[PATH_MAX + 1], md[NAME_MAX + 1];
+  struct dirent *dirent   = NULL;
+  int32_t        name_len = 0, ent_len = 0;
+  DIR           *dir = NULL;
+
+  bzero(fp, sizeof(fp));
+  bzero(md, sizeof(md));
+
+  if (NULL == name)
+    return RES_REDIRECT("/");
+
+  name_len = strlen(name);
+
+  if (NULL == lang)
+    lang = "en";
+
+  if (NULL == (dir = opendir("docs"))) {
+    error("failed to open the docs dir: %s", strerror(errno));
+    RES_SENDFILE("html/internal.html");
+    res->code = 500;
+    return;
+  }
+
+  while ((dirent = readdir(dir)) != NULL) {
+    if (strncmp(dirent->d_name, lang, PATH_MAX) == 0)
+      break;
+  }
+
+  closedir(dir);
+
+  if (NULL == dirent) {
+    RES_SENDFILE("html/notfound.html");
+    return;
+  }
+
+  snprintf(fp, sizeof(fp), "docs/%s", lang);
+
+  if (NULL == (dir = opendir(fp))) {
+    error("failed to open the language dir: %s", strerror(errno));
+    RES_SENDFILE("html/internal.html");
+    res->code = 500;
+    return;
+  }
+
+  while ((dirent = readdir(dir)) != NULL) {
+    if ((ent_len = strlen(dirent->d_name) - 3) != name_len)
+      continue;
+
+    if (strncmp(dirent->d_name, name, name_len) == 0) {
+      memcpy(md, dirent->d_name, ent_len + 3);
+      break;
+    }
+  }
+
+  closedir(dir);
+
+  if (NULL == dirent) {
+    RES_SENDFILE("html/notfound.html");
+    return;
+  }
+
+  char       *md_content = NULL, md_fp[PATH_MAX + 1];
+  struct stat md_st;
+  int         md_fd = 0;
+
+  snprintf(md_fp, sizeof(fp), "%s/%s", fp, md);
+
+  if ((md_fd = open(md_fp, O_RDONLY)) < 0) {
+    error("failed to open %s: %s", fp, strerror(errno));
+    goto err_internal_close;
+  }
+
+  if (fstat(md_fd, &md_st) < 0) {
+    error("failed to fstat %s: %s", fp, strerror(errno));
+    goto err_internal_close;
+  }
+
+  if ((md_content = mmap(0, md_st.st_size, PROT_READ, MAP_PRIVATE, md_fd, 0)) == NULL) {
+    error("failed to mmap %s: %s", fp, strerror(errno));
+    goto err_internal_close;
+  }
+
+  char *parsed = cmark_markdown_to_html(md_content, md_st.st_size, CMARK_OPT_DEFAULT);
+  RES_SEND(parsed);
+
+  free(parsed);
+  munmap(md_content, md_st.st_size);
+  close(md_fd);
+
+  return;
+
+err_internal_close:
+  close(md_fd);
+
+  RES_SENDFILE("html/internal.html");
+  return;
+}