Added expand_path() and perish()

src/db.c

@@ -1,26 +1,101 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
-#include <time.h>
+#include <unistd.h>
+#include <pwd.h>
+#include <sys/types.h>
 #include "pit.h"
 #include "db.h"
 #include "activity.h"
 #include "user.h"
 
-#define PITFILE "/tmp/.pit"
+#define PITFILE "~/.pit"
+
+char *mem2str(char *mem, int len) {
+    char *str = malloc(len + 1);
+    memcpy(str, mem, len);
+    str[len] = '\0';
+
+    return str;
+}
+
+static char *home_dir(char *username, int len) {
+    char *str = mem2str(username, len);
+    struct passwd *pw = getpwnam(str);
+    free(str);
+
+    return (pw ? pw->pw_dir : NULL);
+}
+
+static char *expand_path(char *path, char *expanded) {
+    if (!path || *path != '~') {
+        return path;
+    } else {
+        char *next = path + 1;
+        if (*next == '/') { /* Path without the username, i.e. ~/file */
+            strcpy(expanded, getenv("HOME"));
+            strcat(expanded, next);
+        } else {            /* Path with the username, i.e. ~username/file */
+            char *slash = strchr(next, '/');
+            if (!slash) {
+                slash = next + strlen(next);
+            }
+            char *home = home_dir(next, slash - next);
+            if (!home) {    /* Ex. non-existent username. */
+                perish(path);
+            } else {
+                strcpy(expanded, home);
+                strcat(expanded, slash);
+            }
+        }
+    }
+
+    return expanded;
+}
+
+static char *pit_file_name()
+{
+    static char file_name[128];
+
+    if (!*file_name) {
+        strcpy(file_name, expand_path(PITFILE, file_name));
+    }
+
+    return file_name;
+}
+
+int pit_init(char *argv[]) {
+    char **arg = &argv[1];
+    char *file_name = pit_file_name();
+    int reply = 'Y';
+
+    if (!access(file_name, F_OK)) {
+        if (!*arg || strcmp(*arg, "-f")) { /* Do not prompt user if forced init (-f). */
+            printf("%s already exist, do you want to override it [y/N]: ", file_name);
+            reply = getchar();
+        }
+    }
+
+    if (reply == 'y' || reply == 'Y') {
+        pit_db_initialize();
+        printf("Created empty %s\n", file_name);
+    }
+    return 1;
+}
 
 void pit_db_load() {
-    FILE *pitfile = fopen(PITFILE, "r");
+    char *file_name = pit_file_name();
+    FILE *file = fopen(file_name, "r");
 
-    if (pitfile) {
-        projects   = pit_table_load(pitfile);
-        tasks      = pit_table_load(pitfile);
-        notes      = pit_table_load(pitfile);
-        activities = pit_table_load(pitfile);
-        users      = pit_table_load(pitfile);
-        fclose(pitfile);
+    if (!file) {
+        perish(file_name);
     } else {
-        pit_db_initialize();
+        projects   = pit_table_load(file);
+        tasks      = pit_table_load(file);
+        notes      = pit_table_load(file);
+        activities = pit_table_load(file);
+        users      = pit_table_load(file);
+        fclose(file);
     }
 }
 
@@ -38,17 +113,17 @@ void pit_db_initialize() {
 }
 
 void pit_db_save() {
-    FILE *pitfile = fopen(PITFILE, "wb");
+    char *file_name = pit_file_name();
+    FILE *file = fopen(file_name, "wb");
 
-    if (!pitfile) {
-        die_with_errno(PITFILE);
+    if (!file) {
+        perish(file_name);
     } else {
-        pit_table_save(pitfile, projects);
-        pit_table_save(pitfile, tasks);
-        pit_table_save(pitfile, notes);
-        pit_table_save(pitfile, activities);
-        pit_table_save(pitfile, users);
-
-        fclose(pitfile);
+        pit_table_save(file, projects);
+        pit_table_save(file, tasks);
+        pit_table_save(file, notes);
+        pit_table_save(file, activities);
+        pit_table_save(file, users);
+        fclose(file);
     }
 }

src/db.h

@@ -1,7 +1,8 @@
 #if !defined(__DB_H__)
 #define __DB_H__
 
-void pit_db_load();
-void pit_db_save();
-void pit_db_initialize();
+int   pit_init(char *argv[]);
+void  pit_db_load();
+void  pit_db_save();
+void  pit_db_initialize();
 #endif

src/pit.c

@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <time.h>
 #include "pit.h"
+#include "db.h"
 #include "project.h"
 #include "task.h"
 
@@ -17,21 +18,30 @@ static int usage() {
     return 1;
 }
 
+/*
+** Suicide.
+*/
 void die(char *msg)
 {
-    fprintf(stderr, "pit (fatal): %s\n", msg);
+    fprintf(stderr, "pit: %s\n", msg);
     exit(0);
 }
 
-void die_with_errno(char *prefix)
+/*
+** Forceful death.
+*/
+void perish(char *prefix)
 {
-    fprintf(stderr, "pit (fatal): %s: ", prefix);
+    fprintf(stderr, "pit (fatal): ");
+    if (prefix) {
+        fprintf(stderr, "%s - ", prefix);
+    }
     perror(NULL);
     exit(0);
 }
 
 int main(int argc, char *argv[]) {
-    char *commands[] = { "project", "task", "note", "log" };
+    char *commands[] = { "project", "task", "note", "log", "init" };
 
     /***
     int i;
@@ -46,6 +56,12 @@ int main(int argc, char *argv[]) {
             return pit_project(&argv[1]);
         } else if (strstr(commands[1], argv[1]) == commands[1]) {
             return pit_task(&argv[1]);
+        } else if (strstr(commands[2], argv[1]) == commands[2]) {
+            return 1; /* pit_note(&argv[1]); */
+        } else if (strstr(commands[3], argv[1]) == commands[3]) {
+            return 1; /* pit_log(&argv[1]); */
+        } else if (strstr(commands[4], argv[1]) == commands[4]) {
+            return pit_init(&argv[1]);
         }
     }
     return usage();

src/pit.h

@@ -70,6 +70,6 @@ extern PTable activities;
 extern PTable users;
 
 void die(char *msg);
-void die_with_errno(char *prefix);
+void perish(char *prefix);
 
 #endif

src/project.c

@@ -34,13 +34,17 @@ static void list_projects()
 static void create_project(char *name, char *status)
 {
     pit_db_load();
-    printf("creating project [%s], status [%s]\n", name, status);
 
     if (!already_exist(name)) {
         Project p;
 
         memset(&p, 0, sizeof(p));
 
+        if (!status) {
+            status = "open";
+        }
+        printf("creating project [%s], status [%s]\n", name, status);
+
         strncpy(p.name, name, sizeof(p.name) - 1);
         strncpy(p.status, status, sizeof(p.status) - 1);
         p.current = 1;
@@ -70,23 +74,22 @@ static int delete_project(unsigned long number)
 int pit_project(char *argv[])
 {
     char **arg = &argv[1];
-    char *error = NULL;
 
     if (!*arg) {
         list_projects();
     } else if (!strcmp(*arg, "-c")) {
         if (!*++arg) {
-            error = "missing project name";
+            die("missing project name");
         } else {
             create_project(*arg, *(arg + 1));
         }
     } else if (!strcmp(*arg, "-d") || !strcmp(*arg, "-s")) {
         if (!*++arg) {
-            error = "missing project number";
+            die("missing project number");
         } else {
             unsigned long number = atoi(*arg);
             if (!number) {
-                error = "invalid project number";
+                die("invalid project number");
             } else {
                 if (!strcmp(*--arg, "-d")) {
                     delete_project(number);
@@ -97,9 +100,5 @@ int pit_project(char *argv[])
         }
     }
 
-    if (error) {
-        printf("%s\n", error);
-    }
-
-    return error == NULL;
+    return 1;
 }