From f570e850753106b437802e3a49f14dfebd2ff91e Mon Sep 17 00:00:00 2001
From: giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8>
Date: Sat, 4 May 2019 19:44:01 +0000
Subject: Release 10.73.27

git-svn-id: http://svn.code.sf.net/p/netpbm/code/stable@3603 9d0c8265-081b-0410-96cb-a4ca84ce46f8
---
 converter/other/pnmtopng.c | 71 +++++++++++++++++++++++++++++++++-------------
 doc/HISTORY                | 11 +++++++
 version.mk                 |  2 +-
 3 files changed, 64 insertions(+), 20 deletions(-)

diff --git a/converter/other/pnmtopng.c b/converter/other/pnmtopng.c
index ce723d40..3899a9d2 100644
--- a/converter/other/pnmtopng.c
+++ b/converter/other/pnmtopng.c
@@ -127,6 +127,7 @@ struct cmdlineInfo {
     unsigned int  modtimeSpec;
     time_t        modtime;      /* Meaningless if !modtimeSpec */
     const char *  palette;      /* NULL if none */
+    bool          filterSetSpec;
     int           filterSet;
     unsigned int  force;
     unsigned int  libversion;
@@ -422,15 +423,17 @@ parseCommandLine(int argc, const char ** argv,
     if (!paletteSpec)
         cmdlineP->palette = NULL;
     
-    if (filterSpec + nofilter + sub + up + avg + paeth > 1)
-        pm_error("You may specify at most one of "
-                 "-nofilter, -sub, -up, -avg, -paeth, and -filter");
+    if (filterSpec && (nofilter + sub + up + avg + paeth > 0))
+        pm_error("You may mot specify -filter with "
+                 "-nofilter, -sub, -up, -avg, or -paeth");
     
     if (filterSpec) {
         if (filter < 0 || filter > 4)
             pm_error("-filter is obsolete.  Use -nofilter, -sub, -up, -avg, "
                      "and -paeth options instead.");
-        else
+        else {
+            cmdlineP->filterSetSpec = true;
+
             switch (filter) {
             case 0: cmdlineP->filterSet = PNG_FILTER_NONE;  break;
             case 1: cmdlineP->filterSet = PNG_FILTER_SUB;   break;
@@ -438,21 +441,26 @@ parseCommandLine(int argc, const char ** argv,
             case 3: cmdlineP->filterSet = PNG_FILTER_AVG;   break;
             case 4: cmdlineP->filterSet = PNG_FILTER_PAETH; break;
             }
+        }
     } else {
-        if (nofilter)
-            cmdlineP->filterSet = PNG_FILTER_NONE;
-        else if (sub)
-            cmdlineP->filterSet = PNG_FILTER_SUB;
-        else if (up)
-            cmdlineP->filterSet = PNG_FILTER_UP;
-        else if (avg)
-            cmdlineP->filterSet = PNG_FILTER_AVG;
-        else if (paeth)
-            cmdlineP->filterSet = PNG_FILTER_PAETH;
-        else
-            cmdlineP->filterSet = PNG_FILTER_NONE;
+        if (nofilter + sub + up + avg + paeth == 0)
+            cmdlineP->filterSetSpec = false;
+        else {
+            cmdlineP->filterSetSpec = true;
+            cmdlineP->filterSet = PNG_NO_FILTERS;  /* initial value */
+            if (nofilter)
+                cmdlineP->filterSet |= PNG_FILTER_NONE;
+            if (sub)
+                cmdlineP->filterSet |= PNG_FILTER_SUB;
+            if (up)
+                cmdlineP->filterSet |= PNG_FILTER_UP;
+            if (avg)
+                cmdlineP->filterSet |= PNG_FILTER_AVG;
+            if (paeth)
+                cmdlineP->filterSet |= PNG_FILTER_PAETH;
+        }
     }
-    
+
     if (cmdlineP->sizeSpec)
         parseSizeOpt(size, &cmdlineP->size);
 
@@ -2500,6 +2508,32 @@ doTimeChunk(struct cmdlineInfo const cmdline,
 
 
 
+static void
+reportFilterSet(int const filterSet) {
+
+    pm_message("Limiting filter to: %s%s%s%s%s",
+               (filterSet & PNG_FILTER_NONE)  ? "NONE "  : "",
+               (filterSet & PNG_FILTER_SUB)   ? "SUB "   : "",
+               (filterSet & PNG_FILTER_UP)    ? "UP "    : "",
+               (filterSet & PNG_FILTER_AVG)   ? "AVG "   : "",
+               (filterSet & PNG_FILTER_PAETH) ? "PAETH " : "");
+}
+
+
+
+static void
+doFilters(struct cmdlineInfo const cmdline,
+          struct pngx *      const pngxP) {
+
+    if (cmdline.filterSetSpec) {
+        if (verbose)
+            reportFilterSet(cmdline.filterSet);
+        pngx_setFilter(pngxP, cmdline.filterSet);
+    }
+}
+
+
+
 static void
 reportTrans(struct pngx * const pngxP) {
 
@@ -2865,8 +2899,7 @@ convertpnm(struct cmdlineInfo const cmdline,
 
     doTimeChunk(cmdline, pngxP);
 
-    if (cmdline.filterSet != 0)
-        pngx_setFilter(pngxP, cmdline.filterSet);
+    doFilters(cmdline, pngxP);
 
     setZlibCompression(pngxP, cmdline.zlibCompression);
 
diff --git a/doc/HISTORY b/doc/HISTORY
index f5c9ed0e..477b4ef3 100644
--- a/doc/HISTORY
+++ b/doc/HISTORY
@@ -4,6 +4,17 @@ Netpbm.
 CHANGE HISTORY 
 --------------
 
+19.05.04 BJH  Release 10.73.27
+
+              pnmtopng: Fix bug: Defaults to no filters.  Should be all
+              filters.  Effect is larger PNG output.  Broken after Netpbm
+              10.26 (January 2005) but no later than Netpbm 10.35 (August
+              2006).
+
+              pnmtopng: Fix bug: Doesn't allow multiple filter options.
+              Broken after Netpbm 10.26 (January 2005) but no later than
+              Netpbm 10.35 (August 2006).
+
 19.03.10 BJH  Release 10.73.26
 
               pstopnm: Fix bug: -textalphabits has no effect.  Always broken.
diff --git a/version.mk b/version.mk
index 74f51870..04509eab 100644
--- a/version.mk
+++ b/version.mk
@@ -1,3 +1,3 @@
 NETPBM_MAJOR_RELEASE = 10
 NETPBM_MINOR_RELEASE = 73
-NETPBM_POINT_RELEASE = 26
+NETPBM_POINT_RELEASE = 27
-- 
cgit 1.4.1