dedup

commit 0b8ebd8c3ba33a27f9d04d031eeedf979c4a83bb
parent c764e111ff91c26bed375f5cf2484221d0144c78
Author: sin <sin@2f30.org>
Date:   Wed, 17 Apr 2019 15:16:13 +0100

Add functions to list supported hashes/compressors

Diffstat:
M
compress.c
 | 
10
++++++++++
M
dedup.c
 | 
8
++++++++
M
dedup.h
 | 
2
++
M
hash.c
 | 
10
++++++++++

4 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/compress.c b/compress.c
@@ -2,6 +2,7 @@
 
 #include <err.h>
 #include <stdint.h>
+#include <stdio.h>
 #include <string.h>
 #include <strings.h>
 
@@ -111,3 +112,12 @@ compr_type2name(int type)
 		return NULL;
 	return algo->name;
 }
+
+void
+compr_list(int fd)
+{
+	struct algomap *algo;
+
+	for (algo = &algomap[0]; algo->name != NULL; algo++)
+		dprintf(fd, "%s\n", algo->name);
+}
diff --git a/dedup.c b/dedup.c
@@ -594,12 +594,20 @@ main(int argc, char *argv[])
 	ARGBEGIN {
 	case 'H':
 		hash_name = EARGF(usage());
+		if (strcmp(hash_name, "?") == 0) {
+			hash_list(STDERR_FILENO);
+			return 0;
+		}
 		hash_algo = hash_name2type(hash_name);
 		if (hash_algo < 0)
 			errx(1, "unknown hash: %s", hash_name);
 		break;
 	case 'Z':
 		compr_name = EARGF(usage());
+		if (strcmp(compr_name, "?") == 0) {
+			compr_list(STDERR_FILENO);
+			return 0;
+		}
 		compr_algo = compr_name2type(compr_name);
 		if (compr_algo < 0)
 			errx(1, "unknown compressor: %s", compr_name);
diff --git a/dedup.h b/dedup.h
@@ -145,6 +145,7 @@ size_t decompr(struct compr_ctx *ctx, const void *in, void *out,
 int compr_final(struct compr_ctx *ctx);
 int compr_name2type(char *name);
 char *compr_type2name(int type);
+void compr_list(int fd);
 
 /* hash-blake2b.c */
 int blake2bi(struct hash_ctx *ctx, size_t n);
@@ -172,6 +173,7 @@ int hash_update(struct hash_ctx *ctx, const void *buf, size_t n);
 int hash_final(struct hash_ctx *ctx, void *buf, size_t n);
 int hash_name2type(char *name);
 char *hash_type2name(int type);
+void hash_list(int fd);
 
 /* icache.c */
 struct icache *alloc_icache(void);
diff --git a/hash.c b/hash.c
@@ -1,6 +1,7 @@
 #include <sys/types.h>
 
 #include <stdint.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
@@ -93,3 +94,12 @@ hash_type2name(int type)
 		return NULL;
 	return algo->name;
 }
+
+void
+hash_list(int fd)
+{
+	struct algomap *algo;
+
+	for (algo = &algomap[0]; algo->name != NULL; algo++)
+		dprintf(fd, "%s\n", algo->name);
+}