rfile - version 1

Signed-off-by: czjstmax <jstmaxlol@disroot.org>

3 files changed, 97 insertions, 0 deletions

diff --git a/README.md b/README.md
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+# runfile (`rfile`)
+a minimal, no-dependancy, POSIX C99 Makefile/justfile alternative to *just run commands*.
+
+## usage
+1. create an `rfile` with commands divided by a `\n`
+2. run `rf` in that directory.
+
diff --git a/rf.c b/rf.c
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+++ b/rf.c
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+/*
+ *  runfile - rf
+ *
+ *  a no-dependancy, minimal
+ *  POSIX C99 Make/justfile
+ *  alternative to run commands.
+ *
+ *             czjstmax
+ *   <jstmaxlol at
+ *      disroot dot org>
+ */
+
+#define _POSIX_C_SOURCE 200809L
+
+#define RUNFILE_VERSION 1
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <wordexp.h>
+#include <sys/wait.h>
+
+void usage();
+
+int main(int argc, char **argv)
+{
+    if (argc > 2)
+        usage();
+    else if (argc >= 2) {
+        for (int i = 1; i < argc; i++) {
+            if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0)
+                usage();
+        }
+
+    }
+
+    FILE *f = fopen("rfile", "r");
+
+    if (!f) {
+        printf("no rfile found.\n");
+        return 1;
+    }
+
+    wordexp_t p;
+    char *line = NULL;
+    size_t len = 0;
+
+    while (getline(&line, &len, f) != -1) {
+        line[strcspn(line, "\n")] = '\0';
+        printf("$ %s\n", line);
+
+        wordexp(line, &p, 0);
+
+        pid_t pid = fork();
+
+        if (pid == 0) {
+            execvp(p.we_wordv[0], p.we_wordv);
+
+            perror("failed to run command");
+            wordfree(&p);
+            free(line);
+            fclose(f);
+            _exit(1);
+        }
+        else if (pid > 0) {
+            int status;
+            waitpid(pid, &status, 0);
+        }
+        else {
+            perror("fork failed");
+            return 1;
+        }
+    }
+
+    wordfree(&p);
+    free(line);
+    fclose(f);
+    return 0;
+}
+
+void usage()
+{
+    printf(
+        "< runfile usage >\n"
+        "syn: rf [section]\n"
+    );
+}
+
diff --git a/rfile b/rfile
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+cc -o rf rf.c -Wall -Wextra -pedantic