Implement command line parser

4 files changed, 103 insertions, 6 deletions

diff --git a/core.c b/core.c
index aa3a071..00539a7 100644
--- a/core.c
+++ b/core.c
@@ -2,7 +2,37 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
+
+void gitrolex_parseArgs(struct State_t *s, int argc, const char *argv[]) {
+  const char *task;
+  if(argc < 2) {
+    s->task = ERROR;
+    return;
+  }
+  task = argv[1];
+  if(!strcmp(task, "status")) {
+    s->task = STATUS;
+  }
+  else if(!strcmp(task, "export")) {
+    s->task = EXPORT;
+  }
+  else if(!strcmp(task, "track")) {
+    // if we're tracking time,
+    // we need a branch name stored
+    // in the args
+    if(argc < 3) {
+      s->task = ERROR;
+      return;
+    }
+    s->task = TRACK;
+    strcpy(s->taskArgs, argv[2]);
+  }
+}
+
 int gitrolex_core(int argc, const char* argv[]) {
+  struct State_t state;
+  gitrolex_parseArgs(&state, argc, argv);
   printf("Usage ./gitrolex status | export | track <branch-name>\n");
 }
 
diff --git a/core.h b/core.h
index 52f65ad..a459412 100644
--- a/core.h
+++ b/core.h
@@ -1,10 +1,23 @@
-
 #ifndef GITROLEX_CORE_H
 #define GITROLEX_CORE_H
 
-
 #include <stdlib.h>
 #include <stdio.h>
 
+int gitrolex_core();
+
+enum Task_t {
+  ERROR = -1,
+  STATUS = 0,
+  EXPORT,
+  TRACK
+};
+
+struct State_t {
+  enum Task_t task;
+  char taskArgs[1024];
+};
+
+void gitrolex_parseArgs(struct State_t *s, int argc, const char *argv[]);
 
 #endif
diff --git a/core.test.c b/core.test.c
index feb43b1..b011e00 100644
--- a/core.test.c
+++ b/core.test.c
@@ -1,8 +1,45 @@
-
 #include "test-lib.h"
 #include "core.h"
 
-
 #include <stdlib.h>
 #include <stdio.h>
 
+int parseArgsTest() {
+  // mocks
+  int argc = 1;
+  char *argv[10];
+  struct State_t s;
+
+  // should fail with no args
+  gitrolex_parseArgs(&s, argc, argv);
+  if(s.task != ERROR) {
+    goto fail;
+  }
+
+  // should fail if we track without a name
+  argc = 2;
+  argv[1] = "track";
+  gitrolex_parseArgs(&s, argc, argv);
+  if(s.task != ERROR) {
+    goto fail;
+  }
+
+  // should track a named task
+  argc = 3;
+  argv[1] = "track";
+  argv[2] = "my-feature-branch";
+  gitrolex_parseArgs(&s, argc, argv);
+  if(s.task != TRACK) {
+    goto fail;
+  }
+  if(strcmp(s.taskArgs, argv[2])) {
+    goto fail;
+  }
+  return 0;
+fail:
+  return -1;
+}
+
+int main() {
+  syncTest("gitrolex_parseArgs", "Failed to parse command line arguments", parseArgsTest);
+}
diff --git a/database.h b/database.h
index c297872..c7f7512 100644
--- a/database.h
+++ b/database.h
@@ -1,10 +1,27 @@
-
 #ifndef GITROLEX_DATABASE_H
 #define GITROLEX_DATABASE_H
 
-
 #include <stdlib.h>
 #include <stdio.h>
 
+/**
+ * This file implements a simple key value database using
+ * double precision floating point numbers. Strings may need to
+ * be supported at some point
+ */
+
+struct Database_t {
+  char *path;
+  int maxSize; // in bytes
+};
+
+enum DatabaseError_t {
+  OK = 0,
+  OUT_OF_SPACE
+};
+
+enum DatabaseError_t database_getDouble(struct *Database_t db, const char *path, double *val);
+enum DatabaseError_t database_setDouble(struct *Database_t db, const char *path, double *val);
+
 
 #endif