sttemp

commit 4e02faa8f4354338d5fdbdaeb9ccd2c38ba9b8a3
parent 15d731dae87fe564d86ddbc97468a38058e702d0
Author: Anton Konyahin <me@konyahin.xyz>
Date:   Sat,  1 Jan 2022 23:13:29 +0300

reading of template file

Diffstat:
A
.gitignore
 | 
2
++
M
Makefile
 | 
2
+-
M
README
 | 
2
+-
M
src/main.c
 | 
45
+++++++++++++++++++++++++++++++++++----------

4 files changed, 39 insertions(+), 12 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,2 @@
+sttemp
+*.o
diff --git a/Makefile b/Makefile
@@ -3,7 +3,7 @@
 
 BIN    = sttemp
 CC     = cc
-CFLAGS = -W -O
+CFLAGS = -Wall -Werror -O
 
 all: src/main.c src/config.h
 	$(CC) $(CFLAGS) src/main.c -o $(BIN)
diff --git a/README b/README
@@ -1,4 +1,4 @@
 STTEMP
------
+------
 
 Simple template manager.
diff --git a/src/main.c b/src/main.c
@@ -4,11 +4,39 @@
 #include <string.h>
 #include <fcntl.h>
 
+#define BUF_SIZE 2097152
+
 void show_usage() {
     printf("sttemp - simple template manager\n");
     printf("Usage:\n\tsttemp template_name\n");
 }
 
+char* strconcat(char* first, char* second) {
+    size_t first_len = strlen(first);
+    size_t second_len = strlen(second);
+    char *buf = malloc(first_len + second_len + 1);
+    strncpy(buf, first, first_len);
+    strncpy(buf + first_len, second, second_len + 1);
+    return buf;
+}
+
+char* freadall(FILE* input) {
+    char *buf = malloc(BUF_SIZE);
+    size_t used = 0;
+    size_t len  = 0;
+
+    do {
+        buf = realloc(buf, BUF_SIZE + used);
+        len = fread(buf + used, 1, BUF_SIZE, input);
+        used = used + len;
+    } while (len != 0);
+
+    buf = realloc(buf, used + 1);
+    buf[used] = '\0';
+
+    return buf;
+}
+
 int main(int argc, char *argv[]) {
     if (argc < 2) {
         show_usage();
@@ -21,22 +49,19 @@ int main(int argc, char *argv[]) {
         return 0;
     }
 
-    printf("Template directory: %s\n", template_dir);
-    printf("Template: %s var %s\n", pattern_start, pattern_end);
-
-    size_t temp_len = strlen(template_name) + strlen(template_dir) + 1;
-    char *temp_path = (char*) malloc(temp_len);
-    strcpy(temp_path, template_dir);
-    strcat(temp_path, template_name);
-
-    FILE *template = fopen(temp_path, "r");
+    char *temp_path = strconcat(template_dir, template_name);
+    FILE *template = fopen(temp_path, "rb");
     if (template == NULL) {
         fprintf(stderr, "Template doesn't exist: %s", temp_path);
         return 1;
     }
+    free(temp_path);
 
+    char *buf = freadall(template);
     fclose(template);
-    free(temp_path);
+
+    printf("%s", buf);
+    free(buf);
 
     return 0;
 }