File 0002-mkromfs-sort-gp_enumerate_files-output-for... of Package ghostscript

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File 0002-mkromfs-sort-gp_enumerate_files-output-for-determini.patch of Package ghostscript (Revision 43736ee7e27e5f19801f786cfa0bfce1)

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From ec602a6eadfe7680e0a1008a67afa18903a07ad9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Br=C3=BCns?= <stefan.bruens@rwth-aachen.de>
Date: Thu, 12 Jan 2017 20:55:11 +0100
Subject: [PATCH 2/2] mkromfs: sort gp_enumerate_files output for deterministic
 ROM contents
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gp_enumerate_files_next returns dir entries in the same order as returned
by readdir. Sort by name to generate deterministic output.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
---
 base/mkromfs.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/base/mkromfs.c b/base/mkromfs.c
index 9b81c46..b7799ae 100644
--- a/base/mkromfs.c
+++ b/base/mkromfs.c
@@ -344,6 +344,7 @@ const gs_malloc_memory_t minimal_memory = {
     0  /* max used */
 };
 
+int cmpstringp(const void *p1, const void *p2);
 void put_uint32(FILE *out, const unsigned int q);
 void put_bytes_padded(FILE *out, unsigned char *p, unsigned int len);
 void inode_clear(romfs_inode* node);
@@ -1542,6 +1543,15 @@ static unsigned long pscompact_getcompactedblock(pscompstate *psc, unsigned char
     return out-ubuf;
 }
 
+int cmpstringp(const void *p1, const void *p2)
+{
+   /* The actual arguments to this function are "pointers to
+      pointers to char", but strcmp(3) arguments are "pointers
+      to char", hence the following cast plus dereference */
+
+   return strcmp(* (char * const *) p1, * (char * const *) p2);
+}
+
 /* This relies on the gp_enumerate_* which should not return directories, nor	*/
 /* should it recurse into directories (unlike Adobe's implementation)		*/
 /* paths are checked to see if they are an ordinary file or a path		*/
@@ -1561,6 +1571,8 @@ void process_path(char *path, const char *os_prefix, const char *rom_prefix,
     FILE *in;
     unsigned long psc_len;
     pscompstate psc = { 0 };
+    unsigned long numfiles = 0;
+    char **foundfiles = NULL;
 
     prefixed_path = malloc(PATH_STR_LEN);
     found_path = malloc(PATH_STR_LEN);
@@ -1598,6 +1610,17 @@ void process_path(char *path, const char *os_prefix, const char *rom_prefix,
         if (excluded)
             continue;
 
+        numfiles++;
+        foundfiles = realloc(foundfiles, sizeof(char *) * numfiles);
+        foundfiles[numfiles - 1] = strdup(found_path);
+    }
+
+    qsort(foundfiles, numfiles, sizeof(char *), cmpstringp);
+
+    while (numfiles--) {
+        found_path = *foundfiles;
+        foundfiles++;
+
         /* process a file */
         node = calloc(1, sizeof(romfs_inode));
         /* get info for this file */
-- 
2.11.0

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File 0002-mkromfs-sort-gp_enumerate_files-output-for-determini.patch of Package ghostscript (Revision 43736ee7e27e5f19801f786cfa0bfce1)

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