From 23e665000e876f9ff8b521a060b0cdb7e58287cb Mon Sep 17 00:00:00 2001
From: jvech <jmvalenciae@unal.edu.co>
Date: Thu, 17 Aug 2023 09:09:01 -0500
Subject: [ADD]: Cli implemented in a different function

The program config parameters where encapsulated in a struct to keep
track of them without implementing a lot of functions
---
 src/util.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 94 insertions(+), 4 deletions(-)

(limited to 'src/util.c')

diff --git a/src/util.c b/src/util.c
index 4a8c3ef..9c1dba3 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1,10 +1,12 @@
 /* See LICENSE file for copyright and license details. */
 #include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
 
 #include "util.h"
 
-void
-die(const char *fmt, ...)
+void die(const char *fmt, ...)
 {
 	va_list ap;
 
@@ -22,8 +24,7 @@ die(const char *fmt, ...)
 	exit(1);
 }
 
-void *
-ecalloc(size_t nmemb, size_t size)
+void * ecalloc(size_t nmemb, size_t size)
 {
 	void *p;
 
@@ -31,3 +32,92 @@ ecalloc(size_t nmemb, size_t size)
 		die("calloc:");
 	return p;
 }
+
+
+void version()
+{
+    printf("ml 0.1\n");
+    printf("Written by vech\n");
+    exit(0);
+}
+
+void usage(int exit_code)
+{
+    FILE *fp = (!exit_code) ? stdout : stderr;
+    fprintf(fp,
+            "Usage: ml train [Options] JSON_FILE\n"
+            "   or: ml predict [-o FILE] FILE\n"
+            "Train and predict json data\n"
+            "\n"
+            "Options:\n"
+            "  -a, --alpha=ALPHA        Learning rate (only works with train) [default: 1e-5]\n"
+            "  -e, --epochs=EPOCHS      Number of epochs to train the model (only works with train)\n"
+            "                           [default: 100]\n"
+            "  -o, --output FILE        Output file (only works with predict)\n"
+            "\n"
+            "Examples:\n"
+            "  $ ml train -e 150 -a 1e-4 housing.json\n"
+            "  $ ml predict housing.json -o predictions.json\n"
+           );
+    exit(exit_code);
+}
+
+void util_load_cli(struct Configs *ml, int argc, char *argv[])
+{
+    if (argc <= 1) usage(1);
+    static struct option long_opts[] = {
+        {"help",        no_argument,        0, 'h'},
+        {"version",     no_argument,        0, 'v'},
+        {"epochs",      required_argument,  0, 'e'},
+        {"alpha",       required_argument,  0, 'a'},
+        {"output",      required_argument,  0, 'o'},
+        {0,             0,                  0,  0 },
+    };
+    int c;
+
+    while (1) {
+        c = getopt_long(argc, argv, "hve:a:o:i:l:", long_opts, NULL);
+
+        if (c == -1) {
+            break;
+        }
+        switch (c) {
+        case 'e':
+            ml->epochs = (size_t)atol(optarg);
+            break;
+        case 'a':
+            ml->alpha = (double)atof(optarg);
+            break;
+        case 'o':
+            ml->out_filepath = optarg;
+            break;
+        case 'h':
+            usage(0);
+        case 'v':
+            version();
+        default:
+            usage(1);
+        }
+    }
+
+    argv += optind;
+    argc -= optind;
+    if (argc != 2) usage(1);
+
+    ml->in_filepath = argv[1];
+}
+
+void util_free_config(struct Configs *ml)
+{
+    if (ml->input_keys != NULL) {
+        for (size_t i = 0; i < ml->n_input_keys; i++)
+            free(ml->input_keys[i]);
+        free(ml->input_keys);
+    }
+
+    if (ml->label_keys != NULL) {
+        for (size_t i = 0; i < ml->n_label_keys; i++)
+            free(ml->label_keys[i]);
+        free(ml->label_keys);
+    }
+}
-- 
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