/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
** drh@hwaci.com
** http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to implement the "diff" command
*/
#include "config.h"
#include "diffcmd.h"
#include <assert.h>
/*
** Use the right null device for the platform.
*/
#if defined(_WIN32)
# define NULL_DEVICE "NUL"
#else
# define NULL_DEVICE "/dev/null"
#endif
/*
** Print the "Index:" message that patches wants to see at the top of a diff.
*/
void diff_print_index(const char *zFile, u64 diffFlags){
if( (diffFlags & (DIFF_SIDEBYSIDE|DIFF_BRIEF))==0 ){
char *z = mprintf("Index: %s\n%.66c\n", zFile, '=');
fossil_print("%s", z);
fossil_free(z);
}
}
/*
** Print the +++/--- filename lines for a diff operation.
*/
void diff_print_filenames(const char *zLeft, const char *zRight, u64 diffFlags){
char *z = 0;
if( diffFlags & DIFF_BRIEF ){
/* no-op */
}else if( diffFlags & DIFF_SIDEBYSIDE ){
int w = diff_width(diffFlags);
int n1 = strlen(zLeft);
int x;
if( n1>w*2 ) n1 = w*2;
x = w*2+17 - (n1+2);
z = mprintf("%.*c %.*s %.*c\n",
x/2, '=', n1, zLeft, (x+1)/2, '=');
}else{
z = mprintf("--- %s\n+++ %s\n", zLeft, zRight);
}
fossil_print("%s", z);
fossil_free(z);
}
/*
** Show the difference between two files, one in memory and one on disk.
**
** The difference is the set of edits needed to transform pFile1 into
** zFile2. The content of pFile1 is in memory. zFile2 exists on disk.
**
** Use the internal diff logic if zDiffCmd is NULL. Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary. If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
void diff_file(
Blob *pFile1, /* In memory content to compare from */
int eType1, /* Does the 'from' content appear to be text */
const char *zFile2, /* On disk content to compare to */
const char *zName, /* Display name of the file */
const char *zDiffCmd, /* Command for comparison */
const char *zBinGlob, /* Treat file names matching this as binary */
int fIncludeBinary, /* Include binary files for external diff */
u64 diffFlags /* Flags to control the diff */
){
if( zDiffCmd==0 ){
Blob out; /* Diff output text */
Blob file2; /* Content of zFile2 */
const char *zName2; /* Name of zFile2 for display */
int eType2 = 0;
/* Read content of zFile2 into memory */
blob_zero(&file2);
if( file_wd_size(zFile2)<0 ){
zName2 = NULL_DEVICE;
}else{
if( file_wd_islink(zFile2) ){
blob_read_link(&file2, zFile2);
}else{
blob_read_from_file(&file2, zFile2);
}
zName2 = zName;
}
if( !fIncludeBinary ){
eType2 = looks_like_text(&file2);
}
/* Compute and output the differences */
if( diffFlags & DIFF_BRIEF ){
if( blob_compare(pFile1, &file2) ){
fossil_print("CHANGED %s\n", zName);
}
}else if( (eType1 == 0) || (eType2 == 0) ){
fossil_print(DIFF_CANNOT_COMPUTE_BINARY);
}else if( DIFFERENT_ENCODING(eType1, eType2) ){
fossil_print(DIFF_CANNOT_COMPUTE_ENCODING);
}else if( (eType1|eType2)&LOOK_LONG ){
fossil_print(DIFF_CANNOT_COMPUTE_LONGLINES);
}else{
blob_to_utf8_no_bom(pFile1, 2);
blob_to_utf8_no_bom(&file2, 2);
blob_zero(&out);
text_diff(pFile1, &file2, &out, 0, diffFlags);
if( blob_size(&out) ){
diff_print_filenames(zName, zName2, diffFlags);
fossil_print("%s\n", blob_str(&out));
}
blob_reset(&out);
}
/* Release memory resources */
blob_reset(&file2);
}else{
int cnt = 0;
Blob nameFile1; /* Name of temporary file to old pFile1 content */
Blob cmd; /* Text of command to run */
if( !fIncludeBinary ){
Blob file2;
int eType2;
if( eType1==0 ){
fossil_print(DIFF_CANNOT_COMPUTE_BINARY);
return;
}
if( zBinGlob ){
Glob *pBinary = glob_create(zBinGlob);
if( glob_match(pBinary, zName) ){
fossil_print(DIFF_CANNOT_COMPUTE_BINARY);
glob_free(pBinary);
return;
}
glob_free(pBinary);
}
blob_zero(&file2);
if( file_wd_size(zFile2)>=0 ){
if( file_wd_islink(zFile2) ){
blob_read_link(&file2, zFile2);
}else{
blob_read_from_file(&file2, zFile2);
}
}
eType2 = looks_like_text(&file2);
if( eType2==0 ){
fossil_print(DIFF_CANNOT_COMPUTE_BINARY);
blob_reset(&file2);
return;
}
blob_reset(&file2);
}
/* Construct a temporary file to hold pFile1 based on the name of
** zFile2 */
blob_zero(&nameFile1);
do{
blob_reset(&nameFile1);
blob_appendf(&nameFile1, "%s~%d", zFile2, cnt++);
}while( file_access(blob_str(&nameFile1),0)==0 );
blob_write_to_file(pFile1, blob_str(&nameFile1));
/* Construct the external diff command */
blob_zero(&cmd);
blob_appendf(&cmd, "%s ", zDiffCmd);
shell_escape(&cmd, blob_str(&nameFile1));
blob_append(&cmd, " ", 1);
shell_escape(&cmd, zFile2);
/* Run the external diff command */
fossil_system(blob_str(&cmd));
/* Delete the temporary file and clean up memory used */
file_delete(blob_str(&nameFile1));
blob_reset(&nameFile1);
blob_reset(&cmd);
}
}
/*
** Show the difference between two files, both in memory.
**
** The difference is the set of edits needed to transform pFile1 into
** pFile2.
**
** Use the internal diff logic if zDiffCmd is NULL. Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary. If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
void diff_file_mem(
Blob *pFile1, /* In memory content to compare from */
Blob *pFile2, /* In memory content to compare to */
int eType, /* Does the content appear to be text */
const char *zName, /* Display name of the file */
const char *zDiffCmd, /* Command for comparison */
const char *zBinGlob, /* Treat file names matching this as binary */
int fIncludeBinary, /* Include binary files for external diff */
u64 diffFlags /* Diff flags */
){
if( diffFlags & DIFF_BRIEF ) return;
if( zDiffCmd==0 ){
Blob out; /* Diff output text */
blob_zero(&out);
blob_to_utf8_no_bom(pFile1, 2);
blob_to_utf8_no_bom(pFile2, 2);
text_diff(pFile1, pFile2, &out, 0, diffFlags);
diff_print_filenames(zName, zName, diffFlags);
fossil_print("%s\n", blob_str(&out));
/* Release memory resources */
blob_reset(&out);
}else{
Blob cmd;
char zTemp1[300];
char zTemp2[300];
if( !fIncludeBinary ){
if( eType==0 ){
fossil_print(DIFF_CANNOT_COMPUTE_BINARY);
return;
}
if( zBinGlob ){
Glob *pBinary = glob_create(zBinGlob);
if( glob_match(pBinary, zName) ){
fossil_print(DIFF_CANNOT_COMPUTE_BINARY);
glob_free(pBinary);
return;
}
glob_free(pBinary);
}
}
/* Construct a temporary file names */
file_tempname(sizeof(zTemp1), zTemp1);
file_tempname(sizeof(zTemp2), zTemp2);
blob_write_to_file(pFile1, zTemp1);
blob_write_to_file(pFile2, zTemp2);
/* Construct the external diff command */
blob_zero(&cmd);
blob_appendf(&cmd, "%s ", zDiffCmd);
shell_escape(&cmd, zTemp1);
blob_append(&cmd, " ", 1);
shell_escape(&cmd, zTemp2);
/* Run the external diff command */
fossil_system(blob_str(&cmd));
/* Delete the temporary file and clean up memory used */
file_delete(zTemp1);
file_delete(zTemp2);
blob_reset(&cmd);
}
}
/*
** Do a diff against a single file named in zFileTreeName from version zFrom
** against the same file on disk.
**
** Use the internal diff logic if zDiffCmd is NULL. Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary. If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_one_against_disk(
const char *zFrom, /* Name of file */
const char *zDiffCmd, /* Use this "diff" command */
const char *zBinGlob, /* Treat file names matching this as binary */
int fIncludeBinary, /* Include binary files for external diff */
u64 diffFlags, /* Diff control flags */
const char *zFileTreeName
){
Blob fname;
Blob content;
int isLink;
int eType = 0;
file_tree_name(zFileTreeName, &fname, 1);
historical_version_of_file(zFrom, blob_str(&fname), &content, &isLink, 0,
fIncludeBinary ? 0 : &eType, 0);
if( !isLink != !file_wd_islink(zFrom) ){
fossil_print(DIFF_CANNOT_COMPUTE_SYMLINK);
}else{
diff_file(&content, eType, zFileTreeName, zFileTreeName,
zDiffCmd, zBinGlob, fIncludeBinary, diffFlags);
}
blob_reset(&content);
blob_reset(&fname);
}
/*
** Run a diff between the version zFrom and files on disk. zFrom might
** be NULL which means to simply show the difference between the edited
** files on disk and the check-out on which they are based.
**
** Use the internal diff logic if zDiffCmd is NULL. Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary. If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_all_against_disk(
const char *zFrom, /* Version to difference from */
const char *zDiffCmd, /* Use this diff command. NULL for built-in */
const char *zBinGlob, /* Treat file names matching this as binary */
int fIncludeBinary, /* Treat file names matching this as binary */
u64 diffFlags /* Flags controlling diff output */
){
int vid;
Blob sql;
Stmt q;
int asNewFile; /* Treat non-existant files as empty files */
asNewFile = (diffFlags & DIFF_VERBOSE)!=0;
vid = db_lget_int("checkout", 0);
vfile_check_signature(vid, CKSIG_ENOTFILE);
blob_zero(&sql);
db_begin_transaction();
if( zFrom ){
int rid = name_to_typed_rid(zFrom, "ci");
if( !is_a_version(rid) ){
fossil_fatal("no such check-in: %s", zFrom);
}
load_vfile_from_rid(rid);
blob_appendf(&sql,
"SELECT v2.pathname, v2.deleted, v2.chnged, v2.rid==0, v1.rid, v1.islink"
" FROM vfile v1, vfile v2 "
" WHERE v1.pathname=v2.pathname AND v1.vid=%d AND v2.vid=%d"
" AND (v2.deleted OR v2.chnged OR v1.mrid!=v2.rid)"
"UNION "
"SELECT pathname, 1, 0, 0, 0, islink"
" FROM vfile v1"
" WHERE v1.vid=%d"
" AND NOT EXISTS(SELECT 1 FROM vfile v2"
" WHERE v2.vid=%d AND v2.pathname=v1.pathname)"
"UNION "
"SELECT pathname, 0, 0, 1, 0, islink"
" FROM vfile v2"
" WHERE v2.vid=%d"
" AND NOT EXISTS(SELECT 1 FROM vfile v1"
" WHERE v1.vid=%d AND v1.pathname=v2.pathname)"
" ORDER BY 1",
rid, vid, rid, vid, vid, rid
);
}else{
blob_appendf(&sql,
"SELECT pathname, deleted, chnged , rid==0, rid, islink"
" FROM vfile"
" WHERE vid=%d"
" AND (deleted OR chnged OR rid==0)"
" ORDER BY pathname",
vid
);
}
db_prepare(&q, blob_str(&sql));
while( db_step(&q)==SQLITE_ROW ){
const char *zPathname = db_column_text(&q,0);
int isDeleted = db_column_int(&q, 1);
int isChnged = db_column_int(&q,2);
int isNew = db_column_int(&q,3);
int srcid = db_column_int(&q, 4);
int isLink = db_column_int(&q, 5);
char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
char *zToFree = zFullName;
int showDiff = 1;
if( isDeleted ){
fossil_print("DELETED %s\n", zPathname);
if( !asNewFile ){ showDiff = 0; zFullName = NULL_DEVICE; }
}else if( file_access(zFullName, 0) ){
fossil_print("MISSING %s\n", zPathname);
if( !asNewFile ){ showDiff = 0; }
}else if( isNew ){
fossil_print("ADDED %s\n", zPathname);
srcid = 0;
if( !asNewFile ){ showDiff = 0; }
}else if( isChnged==3 ){
fossil_print("ADDED_BY_MERGE %s\n", zPathname);
srcid = 0;
if( !asNewFile ){ showDiff = 0; }
}
if( showDiff ){
Blob content;
int eType = 0;
if( !isLink != !file_wd_islink(zFullName) ){
diff_print_index(zPathname, diffFlags);
diff_print_filenames(zPathname, zPathname, diffFlags);
fossil_print(DIFF_CANNOT_COMPUTE_SYMLINK);
continue;
}
if( srcid>0 ){
content_get(srcid, &content);
}else{
blob_zero(&content);
}
if( !fIncludeBinary ){
eType = looks_like_text(&content);
}
diff_print_index(zPathname, diffFlags);
diff_file(&content, eType, zFullName, zPathname, zDiffCmd,
zBinGlob, fIncludeBinary, diffFlags);
blob_reset(&content);
}
free(zToFree);
}
db_finalize(&q);
db_end_transaction(1); /* ROLLBACK */
}
/*
** Output the differences between two versions of a single file.
** zFrom and zTo are the check-ins containing the two file versions.
**
** Use the internal diff logic if zDiffCmd is NULL. Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary. If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_one_two_versions(
const char *zFrom,
const char *zTo,
const char *zDiffCmd,
const char *zBinGlob,
int fIncludeBinary,
u64 diffFlags,
const char *zFileTreeName
){
char *zName;
Blob fname;
Blob v1, v2;
int isLink1, isLink2;
int eType = 0, eType2 = 0;
if( diffFlags & DIFF_BRIEF ) return;
file_tree_name(zFileTreeName, &fname, 1);
zName = blob_str(&fname);
historical_version_of_file(zFrom, zName, &v1, &isLink1, 0,
fIncludeBinary ? 0 : &eType, 0);
historical_version_of_file(zTo, zName, &v2, &isLink2, 0,
fIncludeBinary ? 0 : &eType2, 0);
if( isLink1 != isLink2 ){
diff_print_filenames(zName, zName, diffFlags);
fossil_print(DIFF_CANNOT_COMPUTE_SYMLINK);
}else if( (eType == 0) || (eType2 == 0) ){
diff_print_filenames(zName, zName, diffFlags);
fossil_print(DIFF_CANNOT_COMPUTE_BINARY);
}else if( DIFFERENT_ENCODING(eType, eType2) ){
diff_print_filenames(zName, zName, diffFlags);
fossil_print(DIFF_CANNOT_COMPUTE_ENCODING);
}else if( (eType|eType2)&LOOK_LONG ){
diff_print_filenames(zName, zName, diffFlags);
fossil_print(DIFF_CANNOT_COMPUTE_LONGLINES);
}else{
diff_file_mem(&v1, &v2, eType, zName, zDiffCmd,
zBinGlob, fIncludeBinary, diffFlags);
}
blob_reset(&v1);
blob_reset(&v2);
blob_reset(&fname);
}
/*
** Show the difference between two files identified by ManifestFile
** entries.
**
** Use the internal diff logic if zDiffCmd is NULL. Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary. If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_manifest_entry(
struct ManifestFile *pFrom,
struct ManifestFile *pTo,
const char *zDiffCmd,
const char *zBinGlob,
int fIncludeBinary,
u64 diffFlags
){
Blob f1, f2;
int eType = 0, eType2 = 0;
int rid;
const char *zName = pFrom ? pFrom->zName : pTo->zName;
if( diffFlags & DIFF_BRIEF ) return;
diff_print_index(zName, diffFlags);
if( pFrom ){
rid = uuid_to_rid(pFrom->zUuid, 0);
content_get(rid, &f1);
}else{
blob_zero(&f1);
}
if( pTo ){
rid = uuid_to_rid(pTo->zUuid, 0);
content_get(rid, &f2);
}else{
blob_zero(&f2);
}
if ( !fIncludeBinary ){
eType = looks_like_text(&f1);
eType2 = looks_like_text(&f2);
}
if( (eType == 0) || (eType2 == 0) ){
diff_print_filenames(zName, zName, diffFlags);
fossil_print(DIFF_CANNOT_COMPUTE_BINARY);
}else if( DIFFERENT_ENCODING(eType, eType2) ){
diff_print_filenames(zName, zName, diffFlags);
fossil_print(DIFF_CANNOT_COMPUTE_ENCODING);
}else if( (eType|eType2)&LOOK_LONG ){
diff_print_filenames(zName, zName, diffFlags);
fossil_print(DIFF_CANNOT_COMPUTE_LONGLINES);
}else{
diff_file_mem(&f1, &f2, eType, zName, zDiffCmd,
zBinGlob, fIncludeBinary, diffFlags);
}
blob_reset(&f1);
blob_reset(&f2);
}
/*
** Output the differences between two check-ins.
**
** Use the internal diff logic if zDiffCmd is NULL. Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary. If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_all_two_versions(
const char *zFrom,
const char *zTo,
const char *zDiffCmd,
const char *zBinGlob,
int fIncludeBinary,
u64 diffFlags
){
Manifest *pFrom, *pTo;
ManifestFile *pFromFile, *pToFile;
int asNewFlag = (diffFlags & DIFF_VERBOSE)!=0 ? 1 : 0;
pFrom = manifest_get_by_name(zFrom, 0);
manifest_file_rewind(pFrom);
pFromFile = manifest_file_next(pFrom,0);
pTo = manifest_get_by_name(zTo, 0);
manifest_file_rewind(pTo);
pToFile = manifest_file_next(pTo,0);
while( pFromFile || pToFile ){
int cmp;
if( pFromFile==0 ){
cmp = +1;
}else if( pToFile==0 ){
cmp = -1;
}else{
cmp = fossil_strcmp(pFromFile->zName, pToFile->zName);
}
if( cmp<0 ){
fossil_print("DELETED %s\n", pFromFile->zName);
if( asNewFlag ){
diff_manifest_entry(pFromFile, 0, zDiffCmd, zBinGlob,
fIncludeBinary, diffFlags);
}
pFromFile = manifest_file_next(pFrom,0);
}else if( cmp>0 ){
fossil_print("ADDED %s\n", pToFile->zName);
if( asNewFlag ){
diff_manifest_entry(0, pToFile, zDiffCmd, zBinGlob,
fIncludeBinary, diffFlags);
}
pToFile = manifest_file_next(pTo,0);
}else if( fossil_strcmp(pFromFile->zUuid, pToFile->zUuid)==0 ){
/* No changes */
pFromFile = manifest_file_next(pFrom,0);
pToFile = manifest_file_next(pTo,0);
}else{
if( diffFlags & DIFF_BRIEF ){
fossil_print("CHANGED %s\n", pFromFile->zName);
}else{
diff_manifest_entry(pFromFile, pToFile, zDiffCmd, zBinGlob,
fIncludeBinary, diffFlags);
}
pFromFile = manifest_file_next(pFrom,0);
pToFile = manifest_file_next(pTo,0);
}
}
manifest_destroy(pFrom);
manifest_destroy(pTo);
}
/*
** Return the name of the external diff command, or return NULL if
** no external diff command is defined.
*/
const char *diff_command_external(int guiDiff){
char *zDefault;
const char *zName;
if( guiDiff ){
#if defined(_WIN32)
zDefault = "WinDiff.exe";
#else
zDefault = 0;
#endif
zName = "gdiff-command";
}else{
zDefault = 0;
zName = "diff-command";
}
return db_get(zName, zDefault);
}
/* A Tcl/Tk script used to render diff output.
*/
static const char zDiffScript[] =
@ package require Tk
@
@ array set CFG {
@ TITLE {Fossil Diff}
@ LN_COL_BG #dddddd
@ LN_COL_FG #444444
@ TXT_COL_BG #ffffff
@ TXT_COL_FG #000000
@ MKR_COL_BG #444444
@ MKR_COL_FG #dddddd
@ CHNG_BG #d0d0ff
@ ADD_BG #c0ffc0
@ RM_BG #ffc0c0
@ HR_FG #888888
@ HR_PAD_TOP 4
@ HR_PAD_BTM 8
@ FN_BG #444444
@ FN_FG #ffffff
@ FN_PAD 5
@ FONTS {{DejaVu Sans Mono} Consolas Monaco fixed}
@ FONT_SIZE 9
@ PADX 5
@ WIDTH 80
@ HEIGHT 45
@ LB_HEIGHT 25
@ }
@
@ if {![namespace exists ttk]} {
@ interp alias {} ::ttk::scrollbar {} ::scrollbar
@ interp alias {} ::ttk::menubutton {} ::menubutton
@ }
@
@ proc dehtml {x} {
@ set x [regsub -all {<[^>]*>} $x {}]
@ return [string map {& & < < > > ' ' " \"} $x]
@ }
@
@ proc cols {} {
@ return [list .lnA .txtA .mkr .lnB .txtB]
@ }
@
@ proc colType {c} {
@ regexp {[a-z]+} $c type
@ return $type
@ }
@
@ proc readDiffs {cmd} {
@ set in [open $cmd r]
@ set nDiffs 0
@ array set widths {txt 0 ln 0 mkr 0}
@ while {[gets $in line] != -1} {
@ if {![regexp {^=+\s+(.*?)\s+=+$} $line all fn]} {
@ continue
@ }
@ if {[string compare -length 6 [gets $in] "<table"]} {
@ continue
@ }
@ incr nDiffs
@ set idx [expr {$nDiffs > 1 ? [.txtA index end] : "1.0"}]
@ .wfiles.lb insert end $fn
@
@ foreach c [cols] {
@ while {[gets $in] ne "<pre>"} continue
@
@ if {$nDiffs > 1} {
@ $c insert end \n -
@ }
@ if {[colType $c] eq "txt"} {
@ $c insert end $fn\n fn
@ } else {
@ $c insert end \n fn
@ }
@ $c insert end \n -
@
@ set type [colType $c]
@ set str {}
@ while {[set line [gets $in]] ne "</pre>"} {
@ set len [string length [dehtml $line]]
@ if {$len > $widths($type)} {
@ set widths($type) $len
@ }
@ append str $line\n
@ }
@
@ set re {<span class="diff([a-z]+)">([^<]*)</span>}
@ # Use \r as separator since it can't appear in the diff output (it gets
@ # converted to a space).
@ set str [regsub -all $re $str "\r\\1\r\\2\r"]
@ foreach {pre class mid} [split $str \r] {
@ if {$class ne ""} {
@ $c insert end [dehtml $pre] - [dehtml $mid] [list $class -]
@ } else {
@ $c insert end [dehtml $pre] -
@ }
@ }
@ }
@ }
@ close $in
@
@ foreach c [cols] {
@ set type [colType $c]
@ if {$type ne "txt"} {
@ $c config -width $widths($type)
@ }
@ $c config -state disabled
@ }
@ if {$nDiffs <= [.wfiles.lb cget -height]} {
@ .wfiles.lb config -height $nDiffs
@ grid remove .wfiles.sb
@ }
@
@ return $nDiffs
@ }
@
@ proc viewDiff {idx} {
@ .txtA yview $idx
@ .txtA xview moveto 0
@ }
@
@ proc cycleDiffs {{reverse 0}} {
@ if {$reverse} {
@ set range [.txtA tag prevrange fn @0,0 1.0]
@ if {$range eq ""} {
@ viewDiff {fn.last -1c}
@ } else {
@ viewDiff [lindex $range 0]
@ }
@ } else {
@ set range [.txtA tag nextrange fn {@0,0 +1c} end]
@ if {$range eq "" || [lindex [.txtA yview] 1] == 1} {
@ viewDiff fn.first
@ } else {
@ viewDiff [lindex $range 0]
@ }
@ }
@ }
@
@ proc xvis {col} {
@ set view [$col xview]
@ return [expr {[lindex $view 1]-[lindex $view 0]}]
@ }
@
@ proc scroll-x {args} {
@ set c .txt[expr {[xvis .txtA] < [xvis .txtB] ? "A" : "B"}]
@ eval $c xview $args
@ }
@
@ interp alias {} scroll-y {} .txtA yview
@
@ proc noop {args} {}
@
@ proc enableSync {axis} {
@ update idletasks
@ interp alias {} sync-$axis {}
@ rename _sync-$axis sync-$axis
@ }
@
@ proc disableSync {axis} {
@ rename sync-$axis _sync-$axis
@ interp alias {} sync-$axis {} noop
@ }
@
@ proc sync-x {col first last} {
@ disableSync x
@ $col xview moveto [expr {$first*[xvis $col]/($last-$first)}]
@ foreach side {A B} {
@ set sb .sbx$side
@ set xview [.txt$side xview]
@ if {$xview ne "0.0 1.0"} {
@ grid $sb
@ eval $sb set $xview
@ } else {
@ grid remove $sb
@ }
@ }
@ enableSync x
@ }
@
@ proc sync-y {first last} {
@ disableSync y
@ foreach c [cols] {
@ $c yview moveto $first
@ }
@ if {$first > 0 || $last < 1} {
@ grid .sby
@ .sby set $first $last
@ } else {
@ grid remove .sby
@ }
@ enableSync y
@ }
@
@ wm withdraw .
@ wm title . $CFG(TITLE)
@ wm iconname . $CFG(TITLE)
@ bind . <q> exit
@ bind . <Tab> {cycleDiffs; break}
@ bind . <<PrevWindow>> {cycleDiffs 1; break}
@ bind . <Return> {
@ event generate .files <1>
@ event generate .files <ButtonRelease-1>
@ break
@ }
@ foreach {key axis args} {
@ Up y {scroll -5 units}
@ Down y {scroll 5 units}
@ Left x {scroll -5 units}
@ Right x {scroll 5 units}
@ Prior y {scroll -1 page}
@ Next y {scroll 1 page}
@ Home y {moveto 0}
@ End y {moveto 1}
@ } {
@ bind . <$key> "scroll-$axis $args; break"
@ bind . <Shift-$key> continue
@ }
@
@ ::ttk::menubutton .files -text "Files"
@ toplevel .wfiles
@ wm withdraw .wfiles
@ update idletasks
@ wm transient .wfiles .
@ wm overrideredirect .wfiles 1
@ listbox .wfiles.lb -width 0 -height $CFG(LB_HEIGHT) -activestyle none \
@ -yscroll {.wfiles.sb set}
@ ::ttk::scrollbar .wfiles.sb -command {.wfiles.lb yview}
@ grid .wfiles.lb .wfiles.sb -sticky ns
@ bind .files <1> {
@ set x [winfo rootx %W]
@ set y [expr {[winfo rooty %W]+[winfo height %W]}]
@ wm geometry .wfiles +$x+$y
@ wm deiconify .wfiles
@ focus .wfiles.lb
@ }
@ bind .wfiles <FocusOut> {wm withdraw .wfiles}
@ bind .wfiles <Escape> {focus .}
@ foreach evt {1 Return} {
@ bind .wfiles.lb <$evt> {
@ catch {
@ set idx [lindex [.txtA tag ranges fn] [expr {[%W curselection]*2}]]
@ viewDiff $idx
@ }
@ focus .
@ break
@ }
@ }
@ bind .wfiles.lb <Motion> {
@ %W selection clear 0 end
@ %W selection set @%x,%y
@ }
@
@ foreach {side syncCol} {A .txtB B .txtA} {
@ set ln .ln$side
@ text $ln
@ $ln tag config - -justify right
@
@ set txt .txt$side
@ text $txt -width $CFG(WIDTH) -height $CFG(HEIGHT) -wrap none \
@ -xscroll "sync-x $syncCol"
@ foreach tag {add rm chng} {
@ $txt tag config $tag -background $CFG([string toupper $tag]_BG)
@ $txt tag lower $tag
@ }
@ $txt tag config fn -background $CFG(FN_BG) -foreground $CFG(FN_FG) \
@ -justify center
@ }
@ text .mkr
@
@ font create mono -family courier -size $CFG(FONT_SIZE)
@ foreach font $CFG(FONTS) {
@ if {[lsearch -exact [font families] $font] != -1} {
@ font config mono -family $font
@ break
@ }
@ }
@ foreach c [cols] {
@ set keyPrefix [string toupper [colType $c]]_COL_
@ $c config -bg $CFG(${keyPrefix}BG) -fg $CFG(${keyPrefix}FG) -borderwidth 0 \
@ -font mono -padx $CFG(PADX) -yscroll sync-y
@ $c tag config hr -spacing1 $CFG(HR_PAD_TOP) -spacing3 $CFG(HR_PAD_BTM) \
@ -foreground $CFG(HR_FG)
@ $c tag config fn -spacing1 $CFG(FN_PAD) -spacing3 $CFG(FN_PAD)
@ bindtags $c ". $c Text all"
@ bind $c <1> {focus %W}
@ }
@
@ ::ttk::scrollbar .sby -command {.txtA yview} -orient vertical
@ ::ttk::scrollbar .sbxA -command {.txtA xview} -orient horizontal
@ ::ttk::scrollbar .sbxB -command {.txtB xview} -orient horizontal
@ frame .spacer
@
@ if {[readDiffs $cmd] == 0} {
@ tk_messageBox -type ok -title $CFG(TITLE) -message "No changes"
@ exit
@ }
@
@ grid rowconfigure . 1 -weight 1
@ grid columnconfigure . 1 -weight 1
@ grid columnconfigure . 4 -weight 1
@ grid .files -columnspan 6
@ eval grid [cols] .sby -sticky nsew
@ grid .sbxA -row 2 -column 0 -columnspan 2 -sticky ew
@ grid .spacer -row 2 -column 2
@ grid .sbxB -row 2 -column 3 -columnspan 2 -sticky ew
@
@ wm deiconify .
@ update idletasks
@ .spacer config -height [winfo height .sbxA]
;
/*
** Show diff output in a Tcl/Tk window, in response to the --tk option
** to the diff command.
**
** Steps:
** (1) Write the Tcl/Tk script used for rendering into a temp file.
** (2) Invoke "wish" on the temp file using fossil_system().
** (3) Delete the temp file.
*/
void diff_tk(const char *zSubCmd, int firstArg){
int i;
Blob script;
char *zTempFile;
char *zCmd;
blob_zero(&script);
blob_appendf(&script, "set cmd {| \"%/\" %s --html -y -i -v",
g.nameOfExe, zSubCmd);
for(i=firstArg; i<g.argc; i++){
const char *z = g.argv[i];
if( z[0]=='-' ){
if( strglob("*-html",z) ) continue;
if( strglob("*-y",z) ) continue;
if( strglob("*-i",z) ) continue;
}
blob_append(&script, " ", 1);
shell_escape(&script, z);
}
blob_appendf(&script, "}\n%s", zDiffScript);
zTempFile = write_blob_to_temp_file(&script);
zCmd = mprintf("tclsh \"%s\"", zTempFile);
fossil_system(zCmd);
file_delete(zTempFile);
fossil_free(zCmd);
}
/*
** Returns non-zero if files that may be binary should be used with external
** diff programs.
*/
int diff_include_binary_files(void){
if( is_truth(find_option("diff-binary", 0, 1)) ){
return 1;
}
if( db_get_boolean("diff-binary", 1) ){
return 1;
}
return 0;
}
/*
** Returns the GLOB pattern for file names that should be treated as binary
** by the diff subsystem, if any.
*/
const char *diff_get_binary_glob(void){
const char *zBinGlob = find_option("binary", 0, 1);
if( zBinGlob==0 ) zBinGlob = db_get("binary-glob",0);
return zBinGlob;
}
/*
** COMMAND: diff
** COMMAND: gdiff
**
** Usage: %fossil diff|gdiff ?OPTIONS? ?FILE1? ?FILE2 ...?
**
** Show the difference between the current version of each of the FILEs
** specified (as they exist on disk) and that same file as it was checked
** out. Or if the FILE arguments are omitted, show the unsaved changed
** currently in the working check-out.
**
** If the "--from VERSION" or "-r VERSION" option is used it specifies
** the source check-in for the diff operation. If not specified, the
** source check-in is the base check-in for the current check-out.
**
** If the "--to VERSION" option appears, it specifies the check-in from
** which the second version of the file or files is taken. If there is
** no "--to" option then the (possibly edited) files in the current check-out
** are used.
**
** The "-i" command-line option forces the use of the internal diff logic
** rather than any external diff program that might be configured using
** the "setting" command. If no external diff program is configured, then
** the "-i" option is a no-op. The "-i" option converts "gdiff" into "diff".
**
** The "-N" or "--new-file" option causes the complete text of added or
** deleted files to be displayed.
**
** The "--diff-binary" option enables or disables the inclusion of binary files
** when using an external diff program.
**
** The "--binary" option causes files matching the glob PATTERN to be treated
** as binary when considering if they should be used with external diff program.
** This option overrides the "binary-glob" setting.
**
** Options:
** --binary PATTERN Treat files that match the glob PATTERN as binary
** --branch BRANCH Show diff of all changes on BRANCH
** --brief Show filenames only
** --context|-c N Use N lines of context
** --diff-binary BOOL Include binary files when using external commands
** --from|-r VERSION select VERSION as source for the diff
** --internal|-i use internal diff logic
** --side-by-side|-y side-by-side diff
** --tk Launch a Tcl/Tk GUI for display
** --to VERSION select VERSION as target for the diff
** --unified unified diff
** -v|--verbose output complete text of added or deleted files
** -W|--width Width of lines in side-by-side diff
*/
void diff_cmd(void){
int isGDiff; /* True for gdiff. False for normal diff */
int isInternDiff; /* True for internal diff */
int verboseFlag; /* True if -v or --verbose flag is used */
const char *zFrom; /* Source version number */
const char *zTo; /* Target version number */
const char *zBranch; /* Branch to diff */
const char *zDiffCmd = 0; /* External diff command. NULL for internal diff */
const char *zBinGlob = 0; /* Treat file names matching this as binary */
int fIncludeBinary = 0; /* Include binary files for external diff */
u64 diffFlags = 0; /* Flags to control the DIFF */
int f;
if( find_option("tk",0,0)!=0 ){
diff_tk("diff", 2);
return;
}
isGDiff = g.argv[1][0]=='g';
isInternDiff = find_option("internal","i",0)!=0;
zFrom = find_option("from", "r", 1);
zTo = find_option("to", 0, 1);
zBranch = find_option("branch", 0, 1);
diffFlags = diff_options();
verboseFlag = find_option("verbose","v",0)!=0;
if( !verboseFlag ){
verboseFlag = find_option("new-file","N",0)!=0; /* deprecated */
}
if( verboseFlag ) diffFlags |= DIFF_VERBOSE;
if( zBranch ){
if( zTo || zFrom ){
fossil_fatal("cannot use --from or --to with --branch");
}
zTo = zBranch;
zFrom = mprintf("root:%s", zBranch);
}
if( zTo==0 ){
db_must_be_within_tree();
if( !isInternDiff ){
zDiffCmd = diff_command_external(isGDiff);
}
zBinGlob = diff_get_binary_glob();
fIncludeBinary = diff_include_binary_files();
verify_all_options();
if( g.argc>=3 ){
for(f=2; f<g.argc; ++f){
diff_one_against_disk(zFrom, zDiffCmd, zBinGlob, fIncludeBinary,
diffFlags, g.argv[f]);
}
}else{
diff_all_against_disk(zFrom, zDiffCmd, zBinGlob, fIncludeBinary,
diffFlags);
}
}else if( zFrom==0 ){
fossil_fatal("must use --from if --to is present");
}else{
db_find_and_open_repository(0, 0);
if( !isInternDiff ){
zDiffCmd = diff_command_external(isGDiff);
}
zBinGlob = diff_get_binary_glob();
fIncludeBinary = diff_include_binary_files();
verify_all_options();
if( g.argc>=3 ){
for(f=2; f<g.argc; ++f){
diff_one_two_versions(zFrom, zTo, zDiffCmd, zBinGlob, fIncludeBinary,
diffFlags, g.argv[f]);
}
}else{
diff_all_two_versions(zFrom, zTo, zDiffCmd, zBinGlob, fIncludeBinary,
diffFlags);
}
}
}
/*
** WEBPAGE: vpatch
** URL vpatch?from=UUID&to=UUID
*/
void vpatch_page(void){
const char *zFrom = P("from");
const char *zTo = P("to");
login_check_credentials();
if( !g.perm.Read ){ login_needed(); return; }
if( zFrom==0 || zTo==0 ) fossil_redirect_home();
cgi_set_content_type("text/plain");
diff_all_two_versions(zFrom, zTo, 0, 0, 0, DIFF_VERBOSE);
}