intcmp(1): new tool; npc(1): new tool; scrut(1): new tool; str(1): new tool; strcmp(1): new tool; tests: added POSIX compatibility test and C compiler compatibility test; Makefile: converted to GNUmakefile; README: added README; docs: added docs

2023-12-24 17:13:17 -07:00
parent b1f6caaf41
commit ef1416cd42
25 changed files with 997 additions and 487 deletions
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2023 DTB <trinity@trinity.moe>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Affero General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see https://www.gnu.org/licenses/.
+ */
+
+#include <stdio.h> /* fprintf(3), fputs(3), getc(3), putc(3), stdin, stdout,
+                    * EOF */
+#include <unistd.h> /* getopt(3) */
+#if !defined EX_USAGE || !defined EX_OK
+#	include <sysexits.h>
+#endif
+
+int main(int argc, char *argv[]){
+	int c;
+	char showend;
+	char showtab;
+
+	showend = 0;
+	showtab = 0;
+
+	if(argc > 0)
+		while((c = getopt(argc, argv, "et")) != -1)
+			switch(c){
+			case 'e':	showend = 1; break;
+			case 't':	showtab = 1; break;
+			default:	goto usage;
+			}
+
+	if(argc > optind){
+usage:		fprintf(stderr, "Usage: %s (-eht)\n", argv[0]);
+		return EX_USAGE;
+	}
+
+	while((c = getc(stdin)) != EOF){
+		if((c & 0x80) != 0)
+			fputs("M-", stdout);
+		switch(c ^ 0x80 /* 0b 1000 0000 */){
+		case 0x7f:	fputs("^?", stdout);
+				break;
+		case '\n':	if(showend)
+					putc('$', stdout);
+		default:
+			if(c >= ' ' || c == '\n' || (!showtab && c == '\t'))
+				putc(c, stdout);
+			else
+				fprintf(stdout, "^%c", c + '@');
+		}
+	}
+
+	return EX_OK;
+}