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platform_build/tools/atree/atree.cpp

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include "options.h"
#include "files.h"
#include "fs.h"
#include <set>
#include <iostream>
#include <sstream>
using namespace std;
bool g_debug = getenv("ATREE_DEBUG") != NULL;
vector<string> g_listFiles;
vector<string> g_inputBases;
map<string, string> g_variables;
string g_outputBase;
string g_dependency;
bool g_useHardLinks = false;
const char* USAGE =
"\n"
"Usage: atree OPTIONS\n"
"\n"
"Options:\n"
" -f FILELIST Specify one or more files containing the\n"
" list of files to copy.\n"
" -I INPUTDIR Specify one or more base directories in\n"
" which to look for the files\n"
" -o OUTPUTDIR Specify the directory to copy all of the\n"
" output files to.\n"
" -l Use hard links instead of copying the files.\n"
" -m DEPENDENCY Output a make-formatted file containing the list.\n"
" of files included. It sets the variable ATREE_FILES.\n"
" -v VAR=VAL Replaces ${VAR} by VAL when reading input files.\n"
" -d Verbose debug mode.\n"
"\n"
"FILELIST file format:\n"
" The FILELIST files contain the list of files that will end up\n"
" in the final OUTPUTDIR. Atree will look for files in the INPUTDIR\n"
" directories in the order they are specified.\n"
"\n"
" In a FILELIST file, comment lines start with a #. Other lines\n"
" are of the format:\n"
"\n"
" [rm|strip] DEST\n"
" SRC [strip] DEST\n"
" -SRCPATTERN\n"
"\n"
" DEST should be path relative to the output directory.\n"
" 'rm DEST' removes the destination file and fails if it's missing.\n"
" 'strip DEST' strips the binary destination file.\n"
" If SRC is supplied, the file names can be different.\n"
" SRCPATTERN is a pattern for the filenames.\n"
"\n";
int usage()
{
fwrite(USAGE, strlen(USAGE), 1, stderr);
return 1;
}
static bool
add_variable(const char* arg) {
const char* p = arg;
while (*p && *p != '=') p++;
if (*p == 0 || p == arg || p[1] == 0) {
return false;
}
ostringstream var;
var << "${" << string(arg, p-arg) << "}";
g_variables[var.str()] = string(p+1);
return true;
}
static void
debug_printf(const char* format, ...)
{
if (g_debug) {
fflush(stderr);
va_list ap;
va_start(ap, format);
vprintf(format, ap);
va_end(ap);
fflush(stdout);
}
}
// Escape the filename so that it can be added to the makefile properly.
static string
escape_filename(const string name)
{
ostringstream new_name;
for (string::const_iterator iter = name.begin(); iter != name.end(); ++iter)
{
switch (*iter)
{
case '$':
new_name << "$$";
break;
default:
new_name << *iter;
break;
}
}
return new_name.str();
}
int
main(int argc, char* const* argv)
{
int err;
bool done = false;
while (!done) {
int opt = getopt(argc, argv, "f:I:o:hlm:v:d");
switch (opt)
{
case -1:
done = true;
break;
case 'f':
g_listFiles.push_back(string(optarg));
break;
case 'I':
g_inputBases.push_back(string(optarg));
break;
case 'o':
if (g_outputBase.length() != 0) {
fprintf(stderr, "%s: -o may only be supplied once -- "
"-o %s\n", argv[0], optarg);
return usage();
}
g_outputBase = optarg;
break;
case 'l':
g_useHardLinks = true;
break;
case 'm':
if (g_dependency.length() != 0) {
fprintf(stderr, "%s: -m may only be supplied once -- "
"-m %s\n", argv[0], optarg);
return usage();
}
g_dependency = optarg;
break;
case 'v':
if (!add_variable(optarg)) {
fprintf(stderr, "%s Invalid expression in '-v %s': "
"expected format is '-v VAR=VALUE'.\n",
argv[0], optarg);
return usage();
}
break;
case 'd':
g_debug = true;
break;
default:
case '?':
case 'h':
return usage();
}
}
if (optind != argc) {
fprintf(stderr, "%s: invalid argument -- %s\n", argv[0], argv[optind]);
return usage();
}
if (g_listFiles.size() == 0) {
fprintf(stderr, "%s: At least one -f option must be supplied.\n",
argv[0]);
return usage();
}
if (g_inputBases.size() == 0) {
fprintf(stderr, "%s: At least one -I option must be supplied.\n",
argv[0]);
return usage();
}
if (g_outputBase.length() == 0) {
fprintf(stderr, "%s: -o option must be supplied.\n", argv[0]);
return usage();
}
#if 0
for (vector<string>::iterator it=g_listFiles.begin();
it!=g_listFiles.end(); it++) {
printf("-f \"%s\"\n", it->c_str());
}
for (vector<string>::iterator it=g_inputBases.begin();
it!=g_inputBases.end(); it++) {
printf("-I \"%s\"\n", it->c_str());
}
printf("-o \"%s\"\n", g_outputBase.c_str());
if (g_useHardLinks) {
printf("-l\n");
}
#endif
vector<FileRecord> files;
vector<FileRecord> more;
vector<string> excludes;
set<string> directories;
set<string> deleted;
// read file lists
for (vector<string>::iterator it=g_listFiles.begin();
it!=g_listFiles.end(); it++) {
err = read_list_file(*it, g_variables, &files, &excludes);
if (err != 0) {
return err;
}
}
// look for input files
err = 0;
for (vector<FileRecord>::iterator it=files.begin();
it!=files.end(); it++) {
err |= locate(&(*it), g_inputBases);
}
// expand the directories that we should copy into a list of files
for (vector<FileRecord>::iterator it=files.begin();
it!=files.end(); it++) {
if (it->sourceIsDir) {
err |= list_dir(*it, excludes, &more);
}
}
for (vector<FileRecord>::iterator it=more.begin();
it!=more.end(); it++) {
files.push_back(*it);
}
// get the name and modtime of the output files
for (vector<FileRecord>::iterator it=files.begin();
it!=files.end(); it++) {
stat_out(g_outputBase, &(*it));
}
if (err != 0) {
return 1;
}
// gather directories
for (vector<FileRecord>::iterator it=files.begin();
it!=files.end(); it++) {
if (it->sourceIsDir) {
directories.insert(it->outPath);
} else {
string s = dir_part(it->outPath);
if (s != ".") {
directories.insert(s);
}
}
}
// gather files that should become directores
// and directories that should become files
for (vector<FileRecord>::iterator it=files.begin();
it!=files.end(); it++) {
if (it->outMod != 0 && it->sourceIsDir != it->outIsDir) {
deleted.insert(it->outPath);
}
}
// delete files
for (set<string>::iterator it=deleted.begin();
it!=deleted.end(); it++) {
debug_printf("deleting %s\n", it->c_str());
err = remove_recursively(*it);
if (err != 0) {
return err;
}
}
// remove all files or directories as requested from the input atree file.
// must be done before create new directories.
for (vector<FileRecord>::iterator it=files.begin();
it!=files.end(); it++) {
if (!it->sourceIsDir) {
if (it->fileOp == FILE_OP_REMOVE &&
deleted.count(it->outPath) == 0) {
debug_printf("remove %s\n", it->outPath.c_str());
err = remove_recursively(it->outPath);
if (err != 0) {
return err;
}
}
}
}
// make directories
for (set<string>::iterator it=directories.begin();
it!=directories.end(); it++) {
debug_printf("mkdir %s\n", it->c_str());
err = mkdir_recursively(*it);
if (err != 0) {
return err;
}
}
// copy (or link) files that are newer or of different size
for (vector<FileRecord>::iterator it=files.begin();
it!=files.end(); it++) {
if (!it->sourceIsDir) {
if (it->fileOp == FILE_OP_REMOVE) {
continue;
}
debug_printf("copy %s(%ld) ==> %s(%ld)",
it->sourcePath.c_str(), it->sourceMod,
it->outPath.c_str(), it->outMod);
if (it->outSize != it->sourceSize || it->outMod < it->sourceMod) {
err = copy_file(it->sourcePath, it->outPath);
debug_printf(" done.\n");
if (err != 0) {
return err;
}
} else {
debug_printf(" skipping.\n");
}
if (it->fileOp == FILE_OP_STRIP) {
debug_printf("strip %s\n", it->outPath.c_str());
err = strip_file(it->outPath);
if (err != 0) {
return err;
}
}
}
}
// output the dependency file
if (g_dependency.length() != 0) {
FILE *f = fopen(g_dependency.c_str(), "w");
if (f != NULL) {
fprintf(f, "ATREE_FILES := $(ATREE_FILES) \\\n");
for (vector<FileRecord>::iterator it=files.begin();
it!=files.end(); it++) {
if (!it->sourceIsDir) {
fprintf(f, "%s \\\n",
escape_filename(it->sourcePath).c_str());
}
}
fprintf(f, "\n");
fclose(f);
} else {
fprintf(stderr, "error opening manifest file for write: %s\n",
g_dependency.c_str());
}
}
return 0;
}
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