move files to src/ subdir

3 files changed, 226 insertions, 0 deletions

diff --git a/src/hashmap.c b/src/hashmap.c
new file mode 100644
index 0000000..3d9edd0
--- /dev/null
+++ b/src/hashmap.c
@@ -0,0 +1,74 @@
+#include <string.h>
+#include <stdlib.h>
+#include <err.h>
+#include "hashmap.h"
+
+struct node {
+    char *key;
+    void *value;
+    struct node *next;
+};
+
+struct hashmap *hashmap_new() {
+    struct hashmap *hm = malloc(sizeof *hm);
+    if (!hm) err(EXIT_FAILURE, "out of memory");
+    for (int i=0; i < 26; i++) {
+        hm->buckets[i] = NULL;
+    }
+
+    return hm;
+}
+
+void hashmap_insert(struct hashmap *hm, char *key, void *value) {
+    int pos = (key[0] - 'a') % 26;
+    struct node *head = hm->buckets[pos];
+    struct node *node = head;
+
+    while (node) {
+        if (strcmp(node->key, key) == 0) {
+            node->value = value;
+            return;
+        }
+        node = node->next;
+    }
+    
+    node = malloc(sizeof *node);
+    node->key = key;
+    node->value = value;
+    node->next = head;
+    hm->buckets[pos] = node;
+}
+
+void *hashmap_get(struct hashmap *hm, char *key) {
+    int pos = (key[0] - 'a') % 26;
+    struct node *node = hm->buckets[pos];
+    while (node) {
+        if (strcmp(node->key, key) == 0) {
+            return node->value;
+        }
+
+        node = node->next;
+    }
+
+    return NULL;
+}
+
+void hashmap_remove(char *key) {
+
+}
+
+void hashmap_free(struct hashmap *hm) {
+    struct node *node;
+    struct node *next;
+
+    for (int i=0; i < 26; i++) {
+        node = hm->buckets[i];
+        while (node) {
+            next = node->next;
+            free(node);            
+            node = next;
+        }
+    }
+
+    free(hm);
+}
\ No newline at end of file
diff --git a/src/hashmap.h b/src/hashmap.h
new file mode 100644
index 0000000..a37d3d6
--- /dev/null
+++ b/src/hashmap.h
@@ -0,0 +1,10 @@
+
+struct hashmap {
+    struct node *buckets[26];
+};
+
+void hashmap_insert(struct hashmap *hm, char *key, void *value);
+void *hashmap_get(struct hashmap *hm, char *key);
+void hashmap_remove(char *key);
+struct hashmap *hashmap_new();
+void hashmap_free(struct hashmap *hm);
\ No newline at end of file
diff --git a/src/hyde.c b/src/hyde.c
new file mode 100644
index 0000000..332ddab
--- /dev/null
+++ b/src/hyde.c
@@ -0,0 +1,142 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "vendor/mpc.h"
+#include "hashmap.h"
+
+
+struct post {
+    char title[64];
+    char tags[8][32];
+};
+
+char *read_file(char *filename) {
+    char *input = malloc(BUFSIZ);
+    unsigned int size = 0;
+
+    FILE *f = fopen(filename, "r");
+    if (!f) {
+        printf("Could not open \"%s\" for reading", filename);
+        exit(1);
+    }
+
+    unsigned int read = 0;
+    while ( (read = fread(input, 1, BUFSIZ, f)) > 0) {
+        size += read;
+        input = realloc(input, size + BUFSIZ);
+    }
+
+    fclose(f);
+
+    input[size] = '\0';
+    return input;
+}
+
+int eval(char *dest, mpc_ast_t* t, struct hashmap *ctx) {
+    printf("%s: %s\n", t->tag, t->contents);
+
+    if (strstr(t->tag, "content|text")) {
+        strcat(dest, t->contents);
+        return 0;
+    }
+
+    if (strstr(t->tag, "content|var")) {
+        printf("Key: %s\n", t->contents);
+        char *value = hashmap_get(ctx, t->children[1]->contents);
+        if  (value == NULL) {
+            return 1;
+        }
+        strcat(dest, value);
+        return 0;
+    }
+
+    if (strstr(t->tag, "content|for")) {
+        char *tmp_key = t->children[2]->contents;
+        char *iterator_key = t->children[4]->contents;
+        // TODO: Make this dynamic
+        struct post **posts = hashmap_get(ctx, iterator_key);
+        for (int i=0; i < 2; i++) {
+            hashmap_insert(ctx, tmp_key, posts[i]);
+            eval(dest, t->children[6], ctx);
+        }
+        return 0;
+    }
+
+    for (int i=0; i < t->children_num; i++) {
+        eval(dest, t->children[i], ctx);
+    }
+    
+    return 0;
+}
+
+mpc_parser_t *parser_init() {
+    mpc_parser_t *Symbol = mpc_new("symbol");
+    mpc_parser_t *Text = mpc_new("text");
+    mpc_parser_t *Var_Open = mpc_new("var_open");
+    mpc_parser_t *Var_Close = mpc_new("var_close");
+    mpc_parser_t *Var = mpc_new("var");
+    mpc_parser_t *Block_Open = mpc_new("block_open");
+    mpc_parser_t *Block_Close = mpc_new("block_close");
+    mpc_parser_t *For = mpc_new("for");
+    mpc_parser_t *Content = mpc_new("content");
+    mpc_parser_t *Template = mpc_new("template");
+    mpca_lang(MPCA_LANG_WHITESPACE_SENSITIVE,
+    " symbol    : /[a-zA-Z._]+/ ;"
+    " var_open  : /\{{2} ?/ ;"
+    " var_close : / ?}{2}/ ;"
+    " var       : <var_open> <symbol> <var_close> ;"
+    " block_open: /\{\% ?/ ;"
+    " block_close: / ?\%}/ ;"
+    " for       : <block_open> \"for \" <symbol> \" in \" <symbol> <block_close> <content>* <block_open> \"endfor\" <block_close> ;"
+    " text      : /[^{][^{%]*/ ;"
+    " content   : <var> | <for> | <text>;"
+    " template  : /^/ <content>* /$/ ;",
+    Symbol, Var_Open, Var_Close, Var, Block_Open, Block_Close, For, Text, Content, Template, NULL);
+    return Template;
+}
+
+void template(char *tmpl, struct hashmap *ctx) {
+    mpc_parser_t *parser = parser_init();
+    mpc_result_t r;
+
+    if (mpc_parse("input", tmpl, parser, &r)) {
+        mpc_ast_print(r.output);
+        
+        // FIXME: Allocate precisely
+        char *output = malloc(strlen(tmpl) * 2);
+        output[0] = '\0';
+        eval(output, r.output, ctx);
+        printf("Template: \n%s", output);
+        
+        mpc_ast_delete(r.output);
+        free(output);
+    } else {
+        mpc_err_print(r.error);
+        mpc_err_delete(r.error);
+    }
+}
+
+
+int main() {
+    char *input = read_file("index.tpl");
+
+    struct hashmap *ctx = hashmap_new();
+    hashmap_insert(ctx, "title", "Hello world");
+
+    struct post home = { 
+        .title = "Homepage",
+        .tags = {
+            "Tag 1", "Tag 2"
+        }
+    };
+    hashmap_insert(ctx, "home", &home);
+
+    struct post posts[] = {
+        { .title = "Post 1", .tags = { "p1t1" } },
+        { .title = "Post 2", .tags = { "p2t1" } },
+    };
+    hashmap_insert(ctx, "posts", &posts);
+
+    template(input, ctx);
+    hashmap_free(ctx);
+    free(input);
+}
\ No newline at end of file