define a format in a header file, parse command to the format

2 files changed, 72 insertions, 27 deletions

diff --git a/later.c b/later.c
index 5f59577..81eda3b 100644
--- a/later.c
+++ b/later.c
@@ -3,6 +3,59 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "later.h"
+
+
+LaterItem_t* new_item() {
+    LaterItem_t* item = (LaterItem_t*)malloc(sizeof(LaterItem_t));
+    item->directory = NULL;
+    item->path = NULL;
+    item->command = NULL;
+    return item;
+}
+
+void free_item(LaterItem_t* item) {
+    if (item->directory) free(item->directory);
+    if (item->path) free(item->path);
+    if (item->command) free(item->command);
+    free(item);
+}
+
+void build_item(LaterItem_t* item, char** raw_command, int raw_command_length) {
+    // get the current directory
+    char directory[255];
+    getcwd(directory, sizeof(directory)-1);
+    item->directory = strdup(directory);
+
+    // get the current path
+    char* path = getenv("PATH");
+    item->path = path;
+
+    // copy the command
+    char* command = (char*)malloc(2048);
+    int command_idx = 0;
+    char* cur;
+    for (int raw_idx = 0; raw_idx < raw_command_length; raw_idx++) {
+        cur = raw_command[raw_idx];
+        command_idx += strlen(cur);
+        strcat(command, cur);
+        command[command_idx] = ' ';
+        command_idx++;
+    }
+    item->command = command;
+}
+
+void print_item(LaterItem_t* item) {
+    /*
+     * Format:
+     * DIR <pwd>
+     * PATH <path>
+     * DO <command>
+     * --
+     */
+    printf("DIR %s\nPATH %s\nDO %s\n--\n", item->directory, item->path, item->command);
+}
+
 
 int main(int argc, char** argv) {
     /* how it could work
@@ -10,12 +63,6 @@ int main(int argc, char** argv) {
      *  - wait for --
      *  - after --, read everything in and save to the LATERFILE
      *  - make sure to also save the PWD
-     *
-     * Format is:
-     * FROM <pwd>
-     * <command>
-     * --
-     *
      */
     char* laterfile_path = getenv("LATERFILE");
     if (!laterfile_path || strlen(laterfile_path) == 0) {
@@ -23,7 +70,9 @@ int main(int argc, char** argv) {
         return 1;
     }
 
-    FILE* laterfile = fopen(laterfile_path, "a");
+    // open the file for reading/appending
+    FILE* laterfile = fopen(laterfile_path, "a+");
+    fseek(laterfile, 0, SEEK_END);
 
     // loop through the arguments
     int argi = 1;
@@ -36,26 +85,10 @@ int main(int argc, char** argv) {
     }
 
     argi++;  // go past the --
-
-    // determine the current working directory
-    char pwd[255];
-    getcwd(pwd, 254);
-
-    // TODO check err
-
-    // write the output
-    fwrite("FROM ", 1, 5, laterfile);
-    fwrite(pwd, 1, strlen(pwd), laterfile);
-    fwrite("\n", 1, 1, laterfile);
-
-    // write out the command
-    for (int i = argi; i < argc; i++) {
-        fwrite(argv[i], 1, strlen(argv[i]), laterfile);
-        fwrite(" ", 1, 1, laterfile);
-    }
-
-    // write the terminal
-    fwrite("\n--\n", 1, 4, laterfile);
+    
+    LaterItem_t* item = new_item();
+    build_item(item, argv+argi, argc-argi);
+    print_item(item);
 
     return 0;
 }
diff --git a/later.h b/later.h
new file mode 100644
index 0000000..875b81c
--- /dev/null
+++ b/later.h
@@ -0,0 +1,12 @@
+#ifndef __LATER_H__
+#define __LATER_H__
+
+typedef struct LaterItem LaterItem_t;
+
+struct LaterItem {
+    char* directory;
+    char* path;
+    char* command;
+};
+
+#endif