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#include "ninja.h"
#include <getopt.h>
#include <limits.h>
#include <stdio.h>
#include "build.h"
#include "build_log.h"
#include "parsers.h"
#include "graphviz.h"
// Import browse.py as binary data.
asm(
".data\n"
"browse_data_begin:\n"
".incbin \"src/browse.py\"\n"
"browse_data_end:\n"
);
// Declare the symbols defined above.
extern const char browse_data_begin[];
extern const char browse_data_end[];
option options[] = {
{ "help", no_argument, NULL, 'h' },
{ }
};
void usage() {
fprintf(stderr,
"usage: ninja [options] target\n"
"\n"
"options:\n"
" -g output graphviz dot file for targets and exit\n"
" -i FILE specify input build file [default=build.ninja]\n"
" -n dry run (don't run commands but pretend they succeeded)\n"
" -v show all command lines\n"
" -q show inputs/outputs of target (query mode)\n"
" -b browse dependency graph of target in a web browser\n"
);
}
struct RealFileReader : public ManifestParser::FileReader {
bool ReadFile(const string& path, string* content, string* err) {
return ::ReadFile(path, content, err) == 0;
}
};
int main(int argc, char** argv) {
BuildConfig config;
const char* input_file = "build.ninja";
bool graph = false;
bool query = false;
bool browse = false;
int opt;
while ((opt = getopt_long(argc, argv, "bghi:nvq", options, NULL)) != -1) {
switch (opt) {
case 'g':
graph = true;
break;
case 'i':
input_file = optarg;
break;
case 'n':
config.dry_run = true;
break;
case 'v':
config.verbosity = BuildConfig::VERBOSE;
break;
case 'q':
query = true;
break;
case 'b':
browse = true;
break;
case 'h':
default:
usage();
return 1;
}
}
if (optind >= argc) {
fprintf(stderr, "expected target to build\n");
usage();
return 1;
}
argv += optind;
argc -= optind;
char cwd[PATH_MAX];
if (!getcwd(cwd, sizeof(cwd))) {
perror("getcwd");
return 1;
}
State state;
RealFileReader file_reader;
ManifestParser parser(&state, &file_reader);
string err;
if (!parser.Load(input_file, &err)) {
fprintf(stderr, "error loading '%s': %s\n", input_file, err.c_str());
return 1;
}
if (graph) {
GraphViz graph;
graph.Start();
for (int i = 0; i < argc; ++i)
graph.AddTarget(state.GetNode(argv[i]));
graph.Finish();
return 0;
}
if (query) {
for (int i = 0; i < argc; ++i) {
Node* node = state.GetNode(argv[i]);
if (node) {
printf("%s:\n", argv[i]);
if (node->in_edge_) {
printf(" input: %s\n", node->in_edge_->rule_->name_.c_str());
for (vector<Node*>::iterator in = node->in_edge_->inputs_.begin();
in != node->in_edge_->inputs_.end(); ++in) {
printf(" %s\n", (*in)->file_->path_.c_str());
}
}
for (vector<Edge*>::iterator edge = node->out_edges_.begin();
edge != node->out_edges_.end(); ++edge) {
printf(" output: %s\n", (*edge)->rule_->name_.c_str());
for (vector<Node*>::iterator out = (*edge)->outputs_.begin();
out != (*edge)->outputs_.end(); ++out) {
printf(" %s\n", (*out)->file_->path_.c_str());
}
}
} else {
printf("%s unknown\n", argv[i]);
}
}
return 0;
}
if (browse) {
// Create a temporary file, dump the Python code into it, and
// delete the file, keeping our open handle to it.
char tmpl[] = "browsepy-XXXXXX";
int fd = mkstemp(tmpl);
unlink(tmpl);
const int browse_data_len = browse_data_end - browse_data_begin;
int len = write(fd, browse_data_begin, browse_data_len);
if (len < browse_data_len) {
perror("write");
return 1;
}
// exec Python, telling it to use our script file.
const char* command[] = {
"python", "/proc/self/fd/3", argv[0], NULL
};
execvp(command[0], (char**)command);
// If we get here, the exec failed.
printf("ERROR: Failed to spawn python for graph browsing, aborting.\n");
return 1;
}
const char* kLogPath = ".ninja_log";
if (!state.build_log_->Load(kLogPath, &err)) {
fprintf(stderr, "error loading build log: %s\n", err.c_str());
return 1;
}
if (!config.dry_run && !state.build_log_->OpenForWrite(kLogPath, &err)) {
fprintf(stderr, "error opening build log: %s\n", err.c_str());
return 1;
}
Builder builder(&state, config);
for (int i = 0; i < argc; ++i) {
if (!builder.AddTarget(argv[i], &err)) {
if (!err.empty()) {
fprintf(stderr, "%s\n", err.c_str());
return 1;
} else {
// Added a target that is already up-to-date; not really
// an error.
}
}
}
bool success = builder.Build(&err);
if (!err.empty()) {
printf("build stopped: %s.\n", err.c_str());
}
return success ? 0 : 1;
}
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