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