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#include "Perforce.h"
#include "log.h"
#include <string.h>
#include <stdlib.h>
#include <sstream>
#include <sys/types.h>
#include <unistd.h>
#include <sys/wait.h>
using namespace std;
extern char** environ;
int
Perforce::RunCommand(const string& cmd, string* result, bool printOnFailure)
{
int err;
int outPipe[2];
int errPipe[2];
pid_t pid;
log_printf("Perforce::RunCommand: %s\n", cmd.c_str());
err = pipe(outPipe);
err |= pipe(errPipe);
if (err == -1) {
printf("couldn't create pipe. exiting.\n");
exit(1);
return -1;
}
pid = fork();
if (pid == -1) {
printf("couldn't fork. eixiting\n");
exit(1);
return -1;
}
else if (pid == 0) {
char const* args[] = {
"/bin/sh",
"-c",
cmd.c_str(),
NULL
};
close(outPipe[0]);
close(errPipe[0]);
dup2(outPipe[1], 1);
dup2(errPipe[1], 2);
execve(args[0], (char* const*)args, environ);
// done
}
close(outPipe[1]);
close(errPipe[1]);
result->clear();
char buf[1024];
// stdout
while (true) {
size_t amt = read(outPipe[0], buf, sizeof(buf));
result->append(buf, amt);
if (amt <= 0) {
break;
}
}
// stderr -- the messages are short so it ought to just fit in the buffer
string error;
while (true) {
size_t amt = read(errPipe[0], buf, sizeof(buf));
error.append(buf, amt);
if (amt <= 0) {
break;
}
}
close(outPipe[0]);
close(errPipe[0]);
waitpid(pid, &err, 0);
if (WIFEXITED(err)) {
err = WEXITSTATUS(err);
} else {
err = -1;
}
if (err != 0 && printOnFailure) {
write(2, error.c_str(), error.length());
}
return err;
}
int
Perforce::GetResourceFileNames(const string& version, const string& base,
const vector<string>& apps, vector<string>* results,
bool printOnFailure)
{
int err;
string text;
stringstream cmd;
cmd << "p4 files";
const size_t I = apps.size();
for (size_t i=0; i<I; i++) {
cmd << " \"" << base << '/' << apps[i] << "/res/values/strings.xml@" << version << '"';
}
err = RunCommand(cmd.str(), &text, printOnFailure);
const char* str = text.c_str();
while (*str) {
const char* lineend = strchr(str, '\n');
if (lineend == str) {
str++;
continue;
}
if (lineend-str > 1023) {
fprintf(stderr, "line too long!\n");
return 1;
}
string s(str, lineend-str);
char filename[1024];
char edit[1024];
int count = sscanf(str, "%[^#]#%*d - %s change %*d %*[^\n]\n", filename, edit);
if (count == 2 && 0 != strcmp("delete", edit)) {
results->push_back(string(filename));
}
str = lineend + 1;
}
return err;
}
int
Perforce::GetFile(const string& file, const string& version, string* result,
bool printOnFailure)
{
stringstream cmd;
cmd << "p4 print -q \"" << file << '@' << version << '"';
return RunCommand(cmd.str(), result, printOnFailure);
}
string
Perforce::GetCurrentChange(bool printOnFailure)
{
int err;
string text;
err = RunCommand("p4 changes -m 1 \\#have", &text, printOnFailure);
if (err != 0) {
return "";
}
long long n;
int count = sscanf(text.c_str(), "Change %lld on", &n);
if (count != 1) {
return "";
}
char result[100];
sprintf(result, "%lld", n);
return string(result);
}
static int
do_files(const string& op, const vector<string>& files, bool printOnFailure)
{
string text;
stringstream cmd;
cmd << "p4 " << op;
const size_t I = files.size();
for (size_t i=0; i<I; i++) {
cmd << " \"" << files[i] << "\"";
}
return Perforce::RunCommand(cmd.str(), &text, printOnFailure);
}
int
Perforce::EditFiles(const vector<string>& files, bool printOnFailure)
{
return do_files("edit", files, printOnFailure);
}
int
Perforce::AddFiles(const vector<string>& files, bool printOnFailure)
{
return do_files("add", files, printOnFailure);
}
int
Perforce::DeleteFiles(const vector<string>& files, bool printOnFailure)
{
return do_files("delete", files, printOnFailure);
}
string
Perforce::Where(const string& depotPath, bool printOnFailure)
{
int err;
string text;
string cmd = "p4 where ";
cmd += depotPath;
err = RunCommand(cmd, &text, printOnFailure);
if (err != 0) {
return "";
}
size_t index = text.find(' ');
if (index == text.npos) {
return "";
}
index = text.find(' ', index+1)+1;
if (index == text.npos) {
return "";
}
return text.substr(index, text.length()-index-1);
}
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