added loader, error handling and cli. tests needed

1 files changed, 104 insertions, 0 deletions

diff --git a/src/loader.c b/src/loader.c
new file mode 100644
index 0000000..35ecdcf
--- /dev/null
+++ b/src/loader.c
@@ -0,0 +1,104 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2015 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file COPYING.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include "utils/utils.h"
+#include "source-parser.h"
+#include "template-parser.h"
+#include "loader.h"
+#include "error.h"
+
+
+char*
+blogc_file_get_contents(const char *path, size_t *len, blogc_error_t **err)
+{
+    if (err == NULL || *err != NULL)
+        return NULL;
+
+    *len = 0;
+    FILE *fp = fopen(path, "r");
+
+    if (fp == NULL) {
+        int tmp_errno = errno;
+        *err = blogc_error_new_printf(BLOGC_ERROR_LOADER,
+            "Failed to open file (%s): %s", path, strerror(tmp_errno));
+        return NULL;
+    }
+
+    b_string_t *str = b_string_new();
+    char buffer[BLOGC_FILE_CHUNK_SIZE];
+
+    while (!feof(fp)) {
+        size_t read_len = fread(buffer, sizeof(char), BLOGC_FILE_CHUNK_SIZE, fp);
+        *len += read_len;
+        b_string_append_len(str, buffer, read_len);
+    }
+    fclose(fp);
+    return b_string_free(str, false);
+}
+
+
+b_slist_t*
+blogc_template_parse_from_file(const char *f, blogc_error_t **err)
+{
+    if (err == NULL || *err != NULL)
+        return NULL;
+    size_t len;
+    char *s = blogc_file_get_contents(f, &len, err);
+    if (s == NULL)
+        return NULL;
+    b_slist_t *rv = blogc_template_parse(s, len, err);
+    free(s);
+    return rv;
+}
+
+
+blogc_source_t*
+blogc_source_parse_from_file(const char *f, blogc_error_t **err)
+{
+    if (err == NULL || *err != NULL)
+        return NULL;
+    size_t len;
+    char *s = blogc_file_get_contents(f, &len, err);
+    if (s == NULL)
+        return NULL;
+    blogc_source_t *rv = blogc_source_parse(s, len, err);
+    free(s);
+    return rv;
+}
+
+
+b_slist_t*
+blogc_source_parse_from_files(b_slist_t *l, blogc_error_t **err)
+{
+    blogc_error_t *tmp_err = NULL;
+    b_slist_t *rv = NULL;
+
+    for (b_slist_t *tmp = l; tmp != NULL; tmp = tmp->next) {
+        char *f = tmp->data;
+        blogc_source_t *s = blogc_source_parse_from_file(f, &tmp_err);
+        if (s == NULL) {
+            *err = blogc_error_new_printf(BLOGC_ERROR_LOADER,
+                "An error occurred while parsing source file: %s\n\n%s",
+                f, tmp_err->msg);
+            blogc_error_free(tmp_err);
+            tmp_err = NULL;
+            b_slist_free_full(rv, blogc_source_free);
+            rv = NULL;
+            break;
+        }
+        rv = b_slist_append(rv, s);
+    }
+    return rv;
+}