hash-lookup: rename from sha1-lookup

Change all remnants of "sha1" in hash-lookup.c and .h and rename them to
reflect that we're not just able to handle SHA-1 these days.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Makefile

@@ -901,6 +901,7 @@ LIB_OBJS += gettext.o
 LIB_OBJS += gpg-interface.o
 LIB_OBJS += graph.o
 LIB_OBJS += grep.o
+LIB_OBJS += hash-lookup.o
 LIB_OBJS += hashmap.o
 LIB_OBJS += help.o
 LIB_OBJS += hex.o
@@ -995,7 +996,6 @@ LIB_OBJS += sequencer.o
 LIB_OBJS += serve.o
 LIB_OBJS += server-info.o
 LIB_OBJS += setup.o
-LIB_OBJS += sha1-lookup.o
 LIB_OBJS += shallow.o
 LIB_OBJS += sideband.o
 LIB_OBJS += sigchain.o

bisect.c

@@ -6,7 +6,7 @@
 #include "refs.h"
 #include "list-objects.h"
 #include "quote.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "run-command.h"
 #include "log-tree.h"
 #include "bisect.h"

builtin/name-rev.c

@@ -7,7 +7,7 @@
 #include "refs.h"
 #include "parse-options.h"
 #include "prio-queue.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "commit-slab.h"
 
 /*

commit-graph.c

@@ -7,7 +7,7 @@
 #include "object.h"
 #include "refs.h"
 #include "revision.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "commit-graph.h"
 #include "object-store.h"
 #include "alloc.h"

commit.c

@@ -14,7 +14,7 @@
 #include "mergesort.h"
 #include "commit-slab.h"
 #include "prio-queue.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "wt-status.h"
 #include "advice.h"
 #include "refs.h"

hash-lookup.c

@@ -1,9 +1,9 @@
 #include "cache.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 
-static uint32_t take2(const unsigned char *sha1)
+static uint32_t take2(const unsigned char *hash)
 {
-	return ((sha1[0] << 8) | sha1[1]);
+	return ((hash[0] << 8) | hash[1]);
 }
 
 /*
@@ -100,17 +100,17 @@ int hash_pos(const unsigned char *hash, void *table, size_t nr,
 	return index_pos_to_insert_pos(lo);
 }
 
-int bsearch_hash(const unsigned char *sha1, const uint32_t *fanout_nbo,
+int bsearch_hash(const unsigned char *hash, const uint32_t *fanout_nbo,
 		 const unsigned char *table, size_t stride, uint32_t *result)
 {
 	uint32_t hi, lo;
 
-	hi = ntohl(fanout_nbo[*sha1]);
+	hi = ntohl(fanout_nbo[*hash]);
-	lo = ((*sha1 == 0x0) ? 0 : ntohl(fanout_nbo[*sha1 - 1]));
+	lo = ((*hash == 0x0) ? 0 : ntohl(fanout_nbo[*hash - 1]));
 
 	while (lo < hi) {
 		unsigned mi = lo + (hi - lo) / 2;
-		int cmp = hashcmp(table + mi * stride, sha1);
+		int cmp = hashcmp(table + mi * stride, hash);
 
 		if (!cmp) {
 			if (result)

hash-lookup.h

@@ -1,5 +1,5 @@
-#ifndef SHA1_LOOKUP_H
+#ifndef HASH_LOOKUP_H
-#define SHA1_LOOKUP_H
+#define HASH_LOOKUP_H
 
 typedef const unsigned char *hash_access_fn(size_t index, void *table);
 
@@ -9,12 +9,12 @@ int hash_pos(const unsigned char *hash,
 	     hash_access_fn fn);
 
 /*
- * Searches for sha1 in table, using the given fanout table to determine the
+ * Searches for hash in table, using the given fanout table to determine the
  * interval to search, then using binary search. Returns 1 if found, 0 if not.
  *
  * Takes the following parameters:
  *
- *  - sha1: the hash to search for
+ *  - hash: the hash to search for
  *  - fanout_nbo: a 256-element array of NETWORK-order 32-bit integers; the
  *    integer at position i represents the number of elements in table whose
  *    first byte is less than or equal to i
@@ -23,10 +23,10 @@ int hash_pos(const unsigned char *hash,
  *    GIT_MAX_RAWSZ or greater)
  *  - result: if not NULL, this function stores the element index of the
  *    position found (if the search is successful) or the index of the least
- *    element that is greater than sha1 (if the search is not successful)
+ *    element that is greater than hash (if the search is not successful)
  *
  * This function does not verify the validity of the fanout table.
  */
-int bsearch_hash(const unsigned char *sha1, const uint32_t *fanout_nbo,
+int bsearch_hash(const unsigned char *hash, const uint32_t *fanout_nbo,
 		 const unsigned char *table, size_t stride, uint32_t *result);
 #endif

midx.c

@@ -5,7 +5,7 @@
 #include "lockfile.h"
 #include "packfile.h"
 #include "object-store.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "midx.h"
 #include "progress.h"
 #include "trace2.h"

object-file.c

@@ -20,7 +20,7 @@
 #include "tree-walk.h"
 #include "refs.h"
 #include "pack-revindex.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "bulk-checkin.h"
 #include "repository.h"
 #include "replace-object.h"

oid-array.c

@@ -1,6 +1,6 @@
 #include "cache.h"
 #include "oid-array.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 
 void oid_array_append(struct oid_array *array, const struct object_id *oid)
 {

pack-bitmap-write.c

@@ -9,7 +9,7 @@
 #include "pack-revindex.h"
 #include "pack.h"
 #include "pack-bitmap.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "pack-objects.h"
 #include "commit-reach.h"
 

packfile.c

@@ -7,7 +7,7 @@
 #include "packfile.h"
 #include "delta.h"
 #include "streaming.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "commit.h"
 #include "object.h"
 #include "tag.h"

patch-ids.c

@@ -1,7 +1,7 @@
 #include "cache.h"
 #include "diff.h"
 #include "commit.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 #include "patch-ids.h"
 
 static int patch_id_defined(struct commit *commit)

rerere.c

@@ -10,7 +10,7 @@
 #include "attr.h"
 #include "pathspec.h"
 #include "object-store.h"
-#include "sha1-lookup.h"
+#include "hash-lookup.h"
 
 #define RESOLVED 0
 #define PUNTED 1