/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*
Copyright 2013-2021 The Libfossil Authors, see LICENSES/BSD-2-Clause.txt
SPDX-License-Identifier: BSD-2-Clause-FreeBSD
SPDX-FileCopyrightText: 2021 The Libfossil Authors
SPDX-ArtifactOfProjectName: Libfossil
SPDX-FileType: Code
Heavily indebted to the Fossil SCM project (https://fossil-scm.org).
*****************************************************************************
This file implements an "artifact diff" for in-repo content.
*/
#include "libfossil.h"
#include <stdlib.h> /* atoi() */
struct ADiffAppT {
fsl_diff_opt diffOpt;
fsl_dibu * diffBuilder;
};
typedef struct ADiffAppT ADiffAppT;
ADiffAppT ADiffApp = {
fsl_diff_opt_empty_m,
NULL
};
static int f_adiff(fsl_id_t v1, fsl_id_t v2){
int rc = 0;
fsl_cx * const f = fcli_cx();
fsl_buffer lhs = fsl_buffer_empty;
fsl_buffer rhs = fsl_buffer_empty;
rc = fsl_content_get(f, v1, &lhs);
if(0==rc) rc = fsl_content_get(f, v2, &rhs);
if(0==rc) rc = fsl_diff_v2(&lhs, &rhs, ADiffApp.diffBuilder);
fsl_buffer_clear(&lhs);
fsl_buffer_clear(&rhs);
return rc;
}
int main(int argc, char const * const * argv ){
int rc = 0;
const char * vFrom = NULL;
const char * vTo = NULL;
fsl_cx * f;
fsl_id_t idFrom = 0, idTo = 0;
bool flagBW = false;
bool flagColor = false;
bool flagInvert = false;
bool flagLineNo = false;
bool flagSbs = false;
bool flagIgnoreSpaces = false;
int flagSbsWidth = -1;
int flagContextLines = -1;
fcli_cliflag FCliFlags[] = {
FCLI_FLAG("v1","from","from-version",&vFrom,
"Name of version 1. Default is the first non-flag argument"),
FCLI_FLAG("v2","to","to-version",&vTo,
"Name of version 2. Default is the second non-flag argument"),
FCLI_FLAG_BOOL("w","ignore-all-space",&flagIgnoreSpaces,
"Ignore all whitespace differences."),
FCLI_FLAG_BOOL("y", "sbs", &flagSbs,
"Use side-by-side diff."),
FCLI_FLAG_I32("W","sbs-width","max column width",&flagSbsWidth,
"Max side-by-side diff view width. Implies -y."),
FCLI_FLAG_I32("c","context-lines","line-count",&flagContextLines,
"Number of lines of context."),
FCLI_FLAG_BOOL("l","line-numbers",&flagLineNo,
"Add line numbers (unified diff only)."),
FCLI_FLAG_BOOL("i","invert",&flagInvert,
"Invert the direction of the diff."),
FCLI_FLAG_BOOL("bw","no-color",&flagBW,
"Disables ANSI color sequences."),
FCLI_FLAG_BOOL(NULL,"color", &flagColor,
"Try to force ANSI color even if stdout is not "
"a terminal or --no-color is used. Does not work "
"with all diff formats."),
fcli_cliflag_empty_m
};
fcli_help_info FCliHelp = {
"Generates diff of individual blobs (not checkin versions!).",
"fromArtifactUuid toArtifactUuid",
NULL
};
rc = fcli_setup_v2(argc, argv, FCliFlags, &FCliHelp);
if(rc) goto end;
/* Set up/validate args... */
f = fcli_cx();
if(!fsl_cx_db_repo(f)){
rc = fcli_err_set(FSL_RC_NOT_A_REPO,
"Requires a repository db. See --help.");
goto end;
}
if(flagSbsWidth>0){
ADiffApp.diffOpt.columnWidth = (unsigned short)flagSbsWidth;
flagSbs = true;
}
rc = fsl_dibu_factory(flagSbs
? FSL_DIBU_SPLIT_TEXT
: FSL_DIBU_UNIFIED_TEXT,
&ADiffApp.diffBuilder);
if(rc) goto end;
ADiffApp.diffBuilder->opt = &ADiffApp.diffOpt;
ADiffApp.diffOpt.out = fsl_output_f_FILE;
ADiffApp.diffOpt.outState = stdout;
if(flagIgnoreSpaces){
ADiffApp.diffOpt.diffFlags |= FSL_DIFF2_IGNORE_ALLWS;
}
if(flagInvert){
ADiffApp.diffOpt.diffFlags |= FSL_DIFF2_INVERT;
}
if(flagLineNo){
ADiffApp.diffOpt.diffFlags |= FSL_DIFF2_LINE_NUMBERS;
}
if(flagColor || (!flagBW && fsl_isatty(1))){
fcli_diff_colors(&ADiffApp.diffOpt, FCLI_DIFF_COLORS_DEFAULT);
}
if(flagContextLines>=0){
ADiffApp.diffOpt.contextLines = (unsigned short) flagContextLines;
}
if(fcli_has_unused_flags(0)) goto end;
if(!vFrom) vFrom = fcli_next_arg(1);
if(!vTo) vTo = fcli_next_arg(1);
if(!vFrom || !vTo){
rc = fcli_err_set(FSL_RC_MISUSE, "Both of -v1 UUID and -v2 UUID are required.");
goto end;
}
rc = fsl_sym_to_rid(f, vFrom, FSL_SATYPE_ANY, &idFrom);
if(!rc){
rc = fsl_sym_to_rid(f, vTo, FSL_SATYPE_ANY, &idTo);
}
if(rc) goto end;
ADiffApp.diffBuilder->opt->hashLHS = vFrom;
ADiffApp.diffBuilder->opt->hashRHS = vTo;
rc = f_adiff( idFrom, idTo );
end:
if(ADiffApp.diffBuilder){
ADiffApp.diffBuilder->finalize(ADiffApp.diffBuilder);
}
return fcli_end_of_main(rc);
}