From: Nathan Wagner <nw@hydaspes.if.org>
Date: Sat, 15 Sep 2018 09:03:00 +0000 (+0000)
Subject: add zpm-parse program
X-Git-Tag: v0.1.6~36
X-Git-Url: https://pd.if.org/git/?p=zpackage;a=commitdiff_plain;h=7e811bbe6fd035ebe52523434d55468e85f119fc

add zpm-parse program
---

diff --git a/Makefile b/Makefile
index 2e29167..51cd85a 100644
--- a/Makefile
+++ b/Makefile
@@ -95,7 +95,7 @@ test: $(ZPKGBIN) t/ctap/prove
 	PATH=$(curdir)/t:$(curdir):$(PATH) t/ctap/prove t/*.t
 
 programs: elftype zpm-soname zpm-soneed zpm-addfile zpm-extract zpm-init \
-	zpm-vercmp zpm-findpkg zpm-merge
+	zpm-vercmp zpm-findpkg zpm-merge zpm-quote zpm-parse
 
 uncompress: uncompress.o 
 	$(CC) $(CFLAGS) -o $@ $+ -llzma
@@ -129,6 +129,9 @@ zpm-foreach-path: zpm-foreach-path.o libzpm.a sqlite/sqlite3.h
 zpm-findpkg: zpm-findpkg.o libzpm.a
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf
 
+zpm-parse: zpm-parse.o libzpm.a
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf
+
 zpm-quote: zpm-quote.o libzpm.a
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lzpm -lelf
 
diff --git a/zpm-parse.c b/zpm-parse.c
new file mode 100644
index 0000000..ec05356
--- /dev/null
+++ b/zpm-parse.c
@@ -0,0 +1,75 @@
+#define _POSIX_C_SOURCE 2
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "zpm.h"
+
+int main(int ac, char **av) {
+	int rel;
+	char name[256];
+	char ver[256];
+	int i;
+	int found;
+	int pname = 0;
+	int pver = 0;
+	int prel = 0;
+	int printed = 0;
+	int opt;
+	int pdefault = 1;
+	int eval = 0;
+
+	while ((opt = getopt(ac, av, "nvrE")) != -1) {
+		switch (opt) {
+			case 'n': pdefault = 0; pname = 1; break;
+			case 'v': pdefault = 0; pver = 1; break;
+			case 'r': pdefault = 0; prel = 1; break;
+			case 'E': eval = 1; break;
+			default:
+				  fprintf(stderr, "zpm parse [-nvrE] ...\n");
+				  exit(EXIT_FAILURE);
+				  break;
+		}
+	}
+
+	pname = pname || pdefault;
+	pver = pver || pdefault;
+	prel = prel || pdefault;
+
+	/* TODO need to quote single quotes for eval'able output */
+	for (i=optind; i<ac; i++) {
+		printed = 0;
+		found = zpm_parse_package(av[i], name, ver, &rel);
+		if (found >= 1 && pname) {
+			if (eval) {
+				printf("name='%s'\n", name);
+			} else {
+				printf("%s", name);
+				printed++;
+			}
+		}
+		if (found >= 2 && pver) {
+			if (eval) {
+				printf("version='%s'\n", ver);
+			} else {
+				printf("%s%s", printed ? " " : "", ver);
+				printed++;
+			}
+		}
+		if (found >= 3 && prel) {
+			if (eval) {
+				printf("release='%d'\n", rel);
+			} else {
+				printf("%s%d", printed ? " " : "", rel);
+				printed++;
+			}
+		}
+		if (printed) {
+			putchar('\n');
+		}
+		if (!found) {
+			exit(EXIT_FAILURE);
+		}
+	}
+	return 0;
+}