Revision: 70883
          http://sourceforge.net/p/brlcad/code/70883
Author:   starseeker
Date:     2018-04-16 13:51:32 +0000 (Mon, 16 Apr 2018)
Log Message:
-----------
Add a convenience tool and some notes about making commit msg md5sum -> 
revision maps.

Modified Paths:
--------------
    brlcad/trunk/misc/CMakeLists.txt

Added Paths:
-----------
    brlcad/trunk/misc/svn2git/md5_process_lines.cxx

Modified: brlcad/trunk/misc/CMakeLists.txt
===================================================================
--- brlcad/trunk/misc/CMakeLists.txt    2018-04-15 18:26:37 UTC (rev 70882)
+++ brlcad/trunk/misc/CMakeLists.txt    2018-04-16 13:51:32 UTC (rev 70883)
@@ -95,6 +95,7 @@
   svn2git/README
   svn2git/account-map
   svn2git/archive_branches.sh
+  svn2git/md5_process_lines.cxx
   svn2git/rules
   svn2git/svn2git/CMake/FindAPR.cmake
   svn2git/svn2git/CMake/FindSubversionLibrary.cmake

Added: brlcad/trunk/misc/svn2git/md5_process_lines.cxx
===================================================================
--- brlcad/trunk/misc/svn2git/md5_process_lines.cxx                             
(rev 0)
+++ brlcad/trunk/misc/svn2git/md5_process_lines.cxx     2018-04-16 13:51:32 UTC 
(rev 70883)
@@ -0,0 +1,493 @@
+/* Simple program to generate an MD5 sum for every line of a file.  Written
+ * because doing so reliably on the shell with md5sum was proving problematic.
+ *
+ * Specific original use case was generating md5 sums of commit messages to 
pair
+ * with commit ids for easy matching between commit lists from subversion and 
git:
+ *
+ * The following process generates an MD5_summed_comment + revision list for
+ * subversion: */
+#if 0
+svn log --xml file:///home/user/brlcad_rsync_repo > brlcad_full_log.xml
+svnlog2csv > brlcad_log.csv
+awk -F',' '{$1=""; $2=""; $3=""; print $0}' brlcad_log.csv|sed -e 's/^[ 
\t]*//' > svn_msgs.txt
+awk -F',' '{print $1}' brlcad_log.csv > svn_revs.txt
+dos2unix svn_msgs.txt
+dos2unix svn_revs.txt
+./md5_process_lines svn_msgs.txt > svn_msgs_md5.txt
+paste svn_msgs_md5.txt svn_revs.txt > svn_msgs_map.txt
+#endif
+
+/* A matching git list can be generated with: */
+#if 0
+git log --branches="*" --pretty=format:"%H" > git_hashes.txt
+git log --branches="*" --pretty=format:"%s" > git_msgs.txt
+./md5_process_lines git_msgs.txt > git_msgs_md5.txt
+paste git_msgs_md5.txt git_hashes.txt > git_msgs_map.txt
+#endif
+
+/* This utility includes a de-namespaced version of
+ * 
https://github.com/Microsoft/cpprestsdk/blob/master/Release/libs/websocketpp/websocketpp/common/md5.hpp
+ * to be self contained: */
+
+/*
+   md5.hpp is a reformulation of the md5.h and md5.c code from
+   http://www.opensource.apple.com/source/cups/cups-59/cups/md5.c to allow it 
to
+   function as a component of a header only library. This conversion was done 
by
+   Peter Thorson (webmas...@zaphoyd.com) in 2012 for the WebSocket++ project. 
The
+   changes are released under the same license as the original (listed below)
+   */
+/*
+   Copyright (C) 1999, 2002 Aladdin Enterprises.  All rights reserved.
+   This software is provided 'as-is', without any express or implied
+   warranty.  In no event will the authors be held liable for any damages
+   arising from the use of this software.
+   Permission is granted to anyone to use this software for any purpose,
+   including commercial applications, and to alter it and redistribute it
+   freely, subject to the following restrictions:
+   1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+   2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+   3. This notice may not be removed or altered from any source distribution.
+   L. Peter Deutsch
+   gh...@aladdin.com
+   */
+/*
+   Independent implementation of MD5 (RFC 1321).
+   This code implements the MD5 Algorithm defined in RFC 1321, whose
+   text is available at
+   http://www.ietf.org/rfc/rfc1321.txt
+   The code is derived from the text of the RFC, including the test suite
+   (section A.5) but excluding the rest of Appendix A.  It does not include
+   any code or documentation that is identified in the RFC as being
+   copyrighted.
+   The original and principal author of md5.h is L. Peter Deutsch
+   <gh...@aladdin.com>.  Other authors are noted in the change history
+   that follows (in reverse chronological order):
+   2002-04-13 lpd Removed support for non-ANSI compilers; removed
+   references to Ghostscript; clarified derivation from RFC 1321;
+   now handles byte order either statically or dynamically.
+   1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
+   1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
+   added conditionalization for C++ compilation from Martin
+   Purschke <pursc...@bnl.gov>.
+   1999-05-03 lpd Original version.
+   */
+
+#ifndef MD5_HPP
+#define MD5_HPP
+
+/*
+ * This package supports both compile-time and run-time determination of CPU
+ * byte order.  If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be
+ * compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is
+ * defined as non-zero, the code will be compiled to run only on big-endian
+ * CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to
+ * run on either big- or little-endian CPUs, but will run slightly less
+ * efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined.
+ */
+
+#include <stddef.h>
+#include <string>
+#include <cstring>
+
+typedef unsigned char md5_byte_t; /* 8-bit byte */
+typedef unsigned int md5_word_t; /* 32-bit word */
+
+/* Define the state of the MD5 Algorithm. */
+typedef struct md5_state_s {
+    md5_word_t count[2];    /* message length in bits, lsw first */
+    md5_word_t abcd[4];     /* digest buffer */
+    md5_byte_t buf[64];     /* accumulate block */
+} md5_state_t;
+
+/* Initialize the algorithm. */
+inline void md5_init(md5_state_t *pms);
+
+/* Append a string to the message. */
+inline void md5_append(md5_state_t *pms, md5_byte_t const * data, size_t 
nbytes);
+
+/* Finish the message and return the digest. */
+inline void md5_finish(md5_state_t *pms, md5_byte_t digest[16]);
+
+#undef ZSW_MD5_BYTE_ORDER   /* 1 = big-endian, -1 = little-endian, 0 = unknown 
*/
+#ifdef ARCH_IS_BIG_ENDIAN
+#  define ZSW_MD5_BYTE_ORDER (ARCH_IS_BIG_ENDIAN ? 1 : -1)
+#else
+#  define ZSW_MD5_BYTE_ORDER 0
+#endif
+
+#define ZSW_MD5_T_MASK ((md5_word_t)~0)
+#define ZSW_MD5_T1 /* 0xd76aa478 */ (ZSW_MD5_T_MASK ^ 0x28955b87)
+#define ZSW_MD5_T2 /* 0xe8c7b756 */ (ZSW_MD5_T_MASK ^ 0x173848a9)
+#define ZSW_MD5_T3    0x242070db
+#define ZSW_MD5_T4 /* 0xc1bdceee */ (ZSW_MD5_T_MASK ^ 0x3e423111)
+#define ZSW_MD5_T5 /* 0xf57c0faf */ (ZSW_MD5_T_MASK ^ 0x0a83f050)
+#define ZSW_MD5_T6    0x4787c62a
+#define ZSW_MD5_T7 /* 0xa8304613 */ (ZSW_MD5_T_MASK ^ 0x57cfb9ec)
+#define ZSW_MD5_T8 /* 0xfd469501 */ (ZSW_MD5_T_MASK ^ 0x02b96afe)
+#define ZSW_MD5_T9    0x698098d8
+#define ZSW_MD5_T10 /* 0x8b44f7af */ (ZSW_MD5_T_MASK ^ 0x74bb0850)
+#define ZSW_MD5_T11 /* 0xffff5bb1 */ (ZSW_MD5_T_MASK ^ 0x0000a44e)
+#define ZSW_MD5_T12 /* 0x895cd7be */ (ZSW_MD5_T_MASK ^ 0x76a32841)
+#define ZSW_MD5_T13    0x6b901122
+#define ZSW_MD5_T14 /* 0xfd987193 */ (ZSW_MD5_T_MASK ^ 0x02678e6c)
+#define ZSW_MD5_T15 /* 0xa679438e */ (ZSW_MD5_T_MASK ^ 0x5986bc71)
+#define ZSW_MD5_T16    0x49b40821
+#define ZSW_MD5_T17 /* 0xf61e2562 */ (ZSW_MD5_T_MASK ^ 0x09e1da9d)
+#define ZSW_MD5_T18 /* 0xc040b340 */ (ZSW_MD5_T_MASK ^ 0x3fbf4cbf)
+#define ZSW_MD5_T19    0x265e5a51
+#define ZSW_MD5_T20 /* 0xe9b6c7aa */ (ZSW_MD5_T_MASK ^ 0x16493855)
+#define ZSW_MD5_T21 /* 0xd62f105d */ (ZSW_MD5_T_MASK ^ 0x29d0efa2)
+#define ZSW_MD5_T22    0x02441453
+#define ZSW_MD5_T23 /* 0xd8a1e681 */ (ZSW_MD5_T_MASK ^ 0x275e197e)
+#define ZSW_MD5_T24 /* 0xe7d3fbc8 */ (ZSW_MD5_T_MASK ^ 0x182c0437)
+#define ZSW_MD5_T25    0x21e1cde6
+#define ZSW_MD5_T26 /* 0xc33707d6 */ (ZSW_MD5_T_MASK ^ 0x3cc8f829)
+#define ZSW_MD5_T27 /* 0xf4d50d87 */ (ZSW_MD5_T_MASK ^ 0x0b2af278)
+#define ZSW_MD5_T28    0x455a14ed
+#define ZSW_MD5_T29 /* 0xa9e3e905 */ (ZSW_MD5_T_MASK ^ 0x561c16fa)
+#define ZSW_MD5_T30 /* 0xfcefa3f8 */ (ZSW_MD5_T_MASK ^ 0x03105c07)
+#define ZSW_MD5_T31    0x676f02d9
+#define ZSW_MD5_T32 /* 0x8d2a4c8a */ (ZSW_MD5_T_MASK ^ 0x72d5b375)
+#define ZSW_MD5_T33 /* 0xfffa3942 */ (ZSW_MD5_T_MASK ^ 0x0005c6bd)
+#define ZSW_MD5_T34 /* 0x8771f681 */ (ZSW_MD5_T_MASK ^ 0x788e097e)
+#define ZSW_MD5_T35    0x6d9d6122
+#define ZSW_MD5_T36 /* 0xfde5380c */ (ZSW_MD5_T_MASK ^ 0x021ac7f3)
+#define ZSW_MD5_T37 /* 0xa4beea44 */ (ZSW_MD5_T_MASK ^ 0x5b4115bb)
+#define ZSW_MD5_T38    0x4bdecfa9
+#define ZSW_MD5_T39 /* 0xf6bb4b60 */ (ZSW_MD5_T_MASK ^ 0x0944b49f)
+#define ZSW_MD5_T40 /* 0xbebfbc70 */ (ZSW_MD5_T_MASK ^ 0x4140438f)
+#define ZSW_MD5_T41    0x289b7ec6
+#define ZSW_MD5_T42 /* 0xeaa127fa */ (ZSW_MD5_T_MASK ^ 0x155ed805)
+#define ZSW_MD5_T43 /* 0xd4ef3085 */ (ZSW_MD5_T_MASK ^ 0x2b10cf7a)
+#define ZSW_MD5_T44    0x04881d05
+#define ZSW_MD5_T45 /* 0xd9d4d039 */ (ZSW_MD5_T_MASK ^ 0x262b2fc6)
+#define ZSW_MD5_T46 /* 0xe6db99e5 */ (ZSW_MD5_T_MASK ^ 0x1924661a)
+#define ZSW_MD5_T47    0x1fa27cf8
+#define ZSW_MD5_T48 /* 0xc4ac5665 */ (ZSW_MD5_T_MASK ^ 0x3b53a99a)
+#define ZSW_MD5_T49 /* 0xf4292244 */ (ZSW_MD5_T_MASK ^ 0x0bd6ddbb)
+#define ZSW_MD5_T50    0x432aff97
+#define ZSW_MD5_T51 /* 0xab9423a7 */ (ZSW_MD5_T_MASK ^ 0x546bdc58)
+#define ZSW_MD5_T52 /* 0xfc93a039 */ (ZSW_MD5_T_MASK ^ 0x036c5fc6)
+#define ZSW_MD5_T53    0x655b59c3
+#define ZSW_MD5_T54 /* 0x8f0ccc92 */ (ZSW_MD5_T_MASK ^ 0x70f3336d)
+#define ZSW_MD5_T55 /* 0xffeff47d */ (ZSW_MD5_T_MASK ^ 0x00100b82)
+#define ZSW_MD5_T56 /* 0x85845dd1 */ (ZSW_MD5_T_MASK ^ 0x7a7ba22e)
+#define ZSW_MD5_T57    0x6fa87e4f
+#define ZSW_MD5_T58 /* 0xfe2ce6e0 */ (ZSW_MD5_T_MASK ^ 0x01d3191f)
+#define ZSW_MD5_T59 /* 0xa3014314 */ (ZSW_MD5_T_MASK ^ 0x5cfebceb)
+#define ZSW_MD5_T60    0x4e0811a1
+#define ZSW_MD5_T61 /* 0xf7537e82 */ (ZSW_MD5_T_MASK ^ 0x08ac817d)
+#define ZSW_MD5_T62 /* 0xbd3af235 */ (ZSW_MD5_T_MASK ^ 0x42c50dca)
+#define ZSW_MD5_T63    0x2ad7d2bb
+#define ZSW_MD5_T64 /* 0xeb86d391 */ (ZSW_MD5_T_MASK ^ 0x14792c6e)
+
+static void md5_process(md5_state_t *pms, md5_byte_t const * data /*[64]*/) {
+    md5_word_t
+       a = pms->abcd[0], b = pms->abcd[1],
+         c = pms->abcd[2], d = pms->abcd[3];
+    md5_word_t t;
+#if ZSW_MD5_BYTE_ORDER > 0
+    /* Define storage only for big-endian CPUs. */
+    md5_word_t X[16];
+#else
+    /* Define storage for little-endian or both types of CPUs. */
+    md5_word_t xbuf[16];
+    md5_word_t const * X;
+#endif
+
+    {
+#if ZSW_MD5_BYTE_ORDER == 0
+       /*
+        * Determine dynamically whether this is a big-endian or
+        * little-endian machine, since we can use a more efficient
+        * algorithm on the latter.
+        */
+       static int const w = 1;
+
+       if (*((md5_byte_t const *)&w)) /* dynamic little-endian */
+#endif
+#if ZSW_MD5_BYTE_ORDER <= 0     /* little-endian */
+       {
+           /*
+            * On little-endian machines, we can process properly aligned
+            * data without copying it.
+            */
+           if (!((data - (md5_byte_t const *)0) & 3)) {
+               /* data are properly aligned */
+               X = (md5_word_t const *)data;
+           } else {
+               /* not aligned */
+               std::memcpy(xbuf, data, 64);
+               X = xbuf;
+           }
+       }
+#endif
+#if ZSW_MD5_BYTE_ORDER == 0
+       else            /* dynamic big-endian */
+#endif
+#if ZSW_MD5_BYTE_ORDER >= 0     /* big-endian */
+       {
+           /*
+            * On big-endian machines, we must arrange the bytes in the
+            * right order.
+            */
+           const md5_byte_t *xp = data;
+           int i;
+
+#  if ZSW_MD5_BYTE_ORDER == 0
+           X = xbuf;       /* (dynamic only) */
+#  else
+#    define xbuf X      /* (static only) */
+#  endif
+           for (i = 0; i < 16; ++i, xp += 4)
+               xbuf[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24);
+       }
+#endif
+    }
+
+#define ZSW_MD5_ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
+
+    /* Round 1. */
+    /* Let [abcd k s i] denote the operation
+       a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s). */
+#define ZSW_MD5_F(x, y, z) (((x) & (y)) | (~(x) & (z)))
+#define SET(a, b, c, d, k, s, Ti)\
+    t = a + ZSW_MD5_F(b,c,d) + X[k] + Ti;\
+    a = ZSW_MD5_ROTATE_LEFT(t, s) + b
+    /* Do the following 16 operations. */
+    SET(a, b, c, d,  0,  7,  ZSW_MD5_T1);
+    SET(d, a, b, c,  1, 12,  ZSW_MD5_T2);
+    SET(c, d, a, b,  2, 17,  ZSW_MD5_T3);
+    SET(b, c, d, a,  3, 22,  ZSW_MD5_T4);
+    SET(a, b, c, d,  4,  7,  ZSW_MD5_T5);
+    SET(d, a, b, c,  5, 12,  ZSW_MD5_T6);
+    SET(c, d, a, b,  6, 17,  ZSW_MD5_T7);
+    SET(b, c, d, a,  7, 22,  ZSW_MD5_T8);
+    SET(a, b, c, d,  8,  7,  ZSW_MD5_T9);
+    SET(d, a, b, c,  9, 12, ZSW_MD5_T10);
+    SET(c, d, a, b, 10, 17, ZSW_MD5_T11);
+    SET(b, c, d, a, 11, 22, ZSW_MD5_T12);
+    SET(a, b, c, d, 12,  7, ZSW_MD5_T13);
+    SET(d, a, b, c, 13, 12, ZSW_MD5_T14);
+    SET(c, d, a, b, 14, 17, ZSW_MD5_T15);
+    SET(b, c, d, a, 15, 22, ZSW_MD5_T16);
+#undef SET
+
+    /* Round 2. */
+    /* Let [abcd k s i] denote the operation
+       a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */
+#define ZSW_MD5_G(x, y, z) (((x) & (z)) | ((y) & ~(z)))
+#define SET(a, b, c, d, k, s, Ti)\
+    t = a + ZSW_MD5_G(b,c,d) + X[k] + Ti;\
+    a = ZSW_MD5_ROTATE_LEFT(t, s) + b
+    /* Do the following 16 operations. */
+    SET(a, b, c, d,  1,  5, ZSW_MD5_T17);
+    SET(d, a, b, c,  6,  9, ZSW_MD5_T18);
+    SET(c, d, a, b, 11, 14, ZSW_MD5_T19);
+    SET(b, c, d, a,  0, 20, ZSW_MD5_T20);
+    SET(a, b, c, d,  5,  5, ZSW_MD5_T21);
+    SET(d, a, b, c, 10,  9, ZSW_MD5_T22);
+    SET(c, d, a, b, 15, 14, ZSW_MD5_T23);
+    SET(b, c, d, a,  4, 20, ZSW_MD5_T24);
+    SET(a, b, c, d,  9,  5, ZSW_MD5_T25);
+    SET(d, a, b, c, 14,  9, ZSW_MD5_T26);
+    SET(c, d, a, b,  3, 14, ZSW_MD5_T27);
+    SET(b, c, d, a,  8, 20, ZSW_MD5_T28);
+    SET(a, b, c, d, 13,  5, ZSW_MD5_T29);
+    SET(d, a, b, c,  2,  9, ZSW_MD5_T30);
+    SET(c, d, a, b,  7, 14, ZSW_MD5_T31);
+    SET(b, c, d, a, 12, 20, ZSW_MD5_T32);
+#undef SET
+
+    /* Round 3. */
+    /* Let [abcd k s t] denote the operation
+       a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */
+#define ZSW_MD5_H(x, y, z) ((x) ^ (y) ^ (z))
+#define SET(a, b, c, d, k, s, Ti)\
+    t = a + ZSW_MD5_H(b,c,d) + X[k] + Ti;\
+    a = ZSW_MD5_ROTATE_LEFT(t, s) + b
+    /* Do the following 16 operations. */
+    SET(a, b, c, d,  5,  4, ZSW_MD5_T33);
+    SET(d, a, b, c,  8, 11, ZSW_MD5_T34);
+    SET(c, d, a, b, 11, 16, ZSW_MD5_T35);
+    SET(b, c, d, a, 14, 23, ZSW_MD5_T36);
+    SET(a, b, c, d,  1,  4, ZSW_MD5_T37);
+    SET(d, a, b, c,  4, 11, ZSW_MD5_T38);
+    SET(c, d, a, b,  7, 16, ZSW_MD5_T39);
+    SET(b, c, d, a, 10, 23, ZSW_MD5_T40);
+    SET(a, b, c, d, 13,  4, ZSW_MD5_T41);
+    SET(d, a, b, c,  0, 11, ZSW_MD5_T42);
+    SET(c, d, a, b,  3, 16, ZSW_MD5_T43);
+    SET(b, c, d, a,  6, 23, ZSW_MD5_T44);
+    SET(a, b, c, d,  9,  4, ZSW_MD5_T45);
+    SET(d, a, b, c, 12, 11, ZSW_MD5_T46);
+    SET(c, d, a, b, 15, 16, ZSW_MD5_T47);
+    SET(b, c, d, a,  2, 23, ZSW_MD5_T48);
+#undef SET
+
+    /* Round 4. */
+    /* Let [abcd k s t] denote the operation
+       a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s). */
+#define ZSW_MD5_I(x, y, z) ((y) ^ ((x) | ~(z)))
+#define SET(a, b, c, d, k, s, Ti)\
+    t = a + ZSW_MD5_I(b,c,d) + X[k] + Ti;\
+    a = ZSW_MD5_ROTATE_LEFT(t, s) + b
+    /* Do the following 16 operations. */
+    SET(a, b, c, d,  0,  6, ZSW_MD5_T49);
+    SET(d, a, b, c,  7, 10, ZSW_MD5_T50);
+    SET(c, d, a, b, 14, 15, ZSW_MD5_T51);
+    SET(b, c, d, a,  5, 21, ZSW_MD5_T52);
+    SET(a, b, c, d, 12,  6, ZSW_MD5_T53);
+    SET(d, a, b, c,  3, 10, ZSW_MD5_T54);
+    SET(c, d, a, b, 10, 15, ZSW_MD5_T55);
+    SET(b, c, d, a,  1, 21, ZSW_MD5_T56);
+    SET(a, b, c, d,  8,  6, ZSW_MD5_T57);
+    SET(d, a, b, c, 15, 10, ZSW_MD5_T58);
+    SET(c, d, a, b,  6, 15, ZSW_MD5_T59);
+    SET(b, c, d, a, 13, 21, ZSW_MD5_T60);
+    SET(a, b, c, d,  4,  6, ZSW_MD5_T61);
+    SET(d, a, b, c, 11, 10, ZSW_MD5_T62);
+    SET(c, d, a, b,  2, 15, ZSW_MD5_T63);
+    SET(b, c, d, a,  9, 21, ZSW_MD5_T64);
+#undef SET
+
+    /* Then perform the following additions. (That is increment each
+       of the four registers by the value it had before this block
+       was started.) */
+    pms->abcd[0] += a;
+    pms->abcd[1] += b;
+    pms->abcd[2] += c;
+    pms->abcd[3] += d;
+}
+
+void md5_init(md5_state_t *pms) {
+    pms->count[0] = pms->count[1] = 0;
+    pms->abcd[0] = 0x67452301;
+    pms->abcd[1] = /*0xefcdab89*/ ZSW_MD5_T_MASK ^ 0x10325476;
+    pms->abcd[2] = /*0x98badcfe*/ ZSW_MD5_T_MASK ^ 0x67452301;
+    pms->abcd[3] = 0x10325476;
+}
+
+void md5_append(md5_state_t *pms, md5_byte_t const * data, size_t nbytes) {
+    md5_byte_t const * p = data;
+    size_t left = nbytes;
+    int offset = (pms->count[0] >> 3) & 63;
+    md5_word_t nbits = (md5_word_t)(nbytes << 3);
+
+    if (nbytes <= 0)
+       return;
+
+    /* Update the message length. */
+    pms->count[1] += nbytes >> 29;
+    pms->count[0] += nbits;
+    if (pms->count[0] < nbits)
+       pms->count[1]++;
+
+    /* Process an initial partial block. */
+    if (offset) {
+       int copy = (offset + nbytes > 64 ? 64 - offset : 
static_cast<int>(nbytes));
+
+       std::memcpy(pms->buf + offset, p, copy);
+       if (offset + copy < 64)
+           return;
+       p += copy;
+       left -= copy;
+       md5_process(pms, pms->buf);
+    }
+
+    /* Process full blocks. */
+    for (; left >= 64; p += 64, left -= 64)
+       md5_process(pms, p);
+
+    /* Process a final partial block. */
+    if (left)
+       std::memcpy(pms->buf, p, left);
+}
+
+void md5_finish(md5_state_t *pms, md5_byte_t digest[16]) {
+    static md5_byte_t const pad[64] = {
+       0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+       0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+    };
+    md5_byte_t data[8];
+    int i;
+
+    /* Save the length before padding. */
+    for (i = 0; i < 8; ++i)
+       data[i] = (md5_byte_t)(pms->count[i >> 2] >> ((i & 3) << 3));
+    /* Pad to 56 bytes mod 64. */
+    md5_append(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1);
+    /* Append the length. */
+    md5_append(pms, data, 8);
+    for (i = 0; i < 16; ++i)
+       digest[i] = (md5_byte_t)(pms->abcd[i >> 2] >> ((i & 3) << 3));
+}
+
+// some convenience c++ functions
+inline std::string md5_hash_string(std::string const & s) {
+    char digest[16];
+
+    md5_state_t state;
+
+    md5_init(&state);
+    md5_append(&state, (md5_byte_t const *)s.c_str(), s.size());
+    md5_finish(&state, (md5_byte_t *)digest);
+
+    std::string ret;
+    ret.resize(16);
+    std::copy(digest,digest+16,ret.begin());
+
+    return ret;
+}
+
+const char hexval[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 
'a', 'b', 'c', 'd', 'e', 'f'};
+
+inline std::string md5_hash_hex(std::string const & input) {
+    std::string hash = md5_hash_string(input);
+    std::string hex;
+
+    for (size_t i = 0; i < hash.size(); i++) {
+       hex.push_back(hexval[((hash[i] >> 4) & 0xF)]);
+       hex.push_back(hexval[(hash[i]) & 0x0F]);
+    }
+
+    return hex;
+}
+
+#endif // MD5_HPP
+
+#include <fstream>
+#include <sstream>
+#include <string>
+#include <iostream>
+int main(int argc, const char **argv) {
+
+    if (argc == 1) {
+       std::cerr << "Error: need a file to work on!\n";
+       return -1;
+    }
+    std::ifstream infile(argv[1]);
+    std::string line;
+    while (std::getline(infile, line))
+    {
+       std::istringstream ss(line);
+       std::string s = ss.str();
+       //std::cout << s << ": " << md5_hash_hex(s) << "\n";
+       std::cout << md5_hash_hex(s) << "\n";
+    }
+}
+
+// Local Variables:
+// tab-width: 8
+// mode: C++
+// c-basic-offset: 4
+// indent-tabs-mode: t
+// c-file-style: "stroustrup"
+// End:
+// ex: shiftwidth=4 tabstop=8


Property changes on: brlcad/trunk/misc/svn2git/md5_process_lines.cxx
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