1 mike  1.1 /*
  2           **==============================================================================
  3           **
  4           ** Copyright (c) 2003, 2004, 2005, 2006, Michael Brasher
  5           ** 
  6           ** Permission is hereby granted, free of charge, to any person obtaining a
  7           ** copy of this software and associated documentation files (the "Software"),
  8           ** to deal in the Software without restriction, including without limitation
  9           ** the rights to use, copy, modify, merge, publish, distribute, sublicense,
 10           ** and/or sell copies of the Software, and to permit persons to whom the
 11           ** Software is furnished to do so, subject to the following conditions:
 12           ** 
 13           ** The above copyright notice and this permission notice shall be included in
 14           ** all copies or substantial portions of the Software.
 15           ** 
 16           ** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 17           ** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 18           ** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 19           ** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 20           ** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 21           ** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 22 mike  1.1 ** SOFTWARE.
 23           **
 24           **==============================================================================
 25           */
 26           
 27           #include <string>
 28           #include <vector>
 29           #include <cstdio>
 30           #include <cstdlib>
 31           
 32           using namespace std;
 33           
 34           int main(int argc, char** argv)
 35           {
 36               // Usage:
 37           
 38               if (argc != 2)
 39               {
 40           	fprintf(stderr, "Usage: %s bug-number\n", argv[0]);
 41           	exit(1);
 42               }
 43 mike  1.1 
 44               // Check bug-number:
 45           
 46               size_t bug_number = atoi(argv[1]);
 47           
 48               if (bug_number == 0)
 49               {
 50           	fprintf(stderr, "%s: invalid bug-number argument\n", argv[0]);
 51           	exit(1);
 52               }
 53           
 54               // Run CVS log and save results.
 55           
 56               FILE* is = popen("cvs log", "r");
 57           
 58               if (!is)
 59               {
 60           	fprintf(stderr, "%s: failed to exec cvs\n", argv[0]);
 61           	exit(1);
 62               }
 63           
 64 mike  1.1     char buffer[1024];
 65               vector<string> lines;
 66           
 67               while (fgets(buffer, sizeof(buffer), is) != 0)
 68               {
 69           	// Remove trailing '\n' and '\r' characters.
 70           
 71           	char* p = buffer + strlen(buffer);
 72           
 73           	while (p != buffer && p[-1] == '\n' || p[-1] == '\r')
 74           	    *--p = '\0';
 75           
 76           	// Save working file, bug number, and revision lines only.
 77           
 78           	lines.push_back(buffer);
 79               }
 80           
 81               fclose(is);
 82           
 83               // Build file-revision pairs:
 84           
 85 mike  1.1     string file;
 86               bool found_bug = true;
 87           
 88               for (size_t i = 0; i < lines.size(); i++)
 89               {
 90           	string line = lines[i];
 91           
 92           	if (line.substr(0, 14) == "Working file: ")
 93           	{
 94           	    file = line.substr(14);
 95           	    found_bug = false;
 96           	    continue;
 97           	}
 98           
 99           	if (line.substr(0, 6) == "BUG#: " && line.substr(6) == argv[1])
100           	{
101           	    found_bug = true;
102           	    continue;
103           	}
104           
105           	if (found_bug && line.substr(0, 9) == "revision ")
106 mike  1.1 	{
107           	    string rev = line.substr(9).c_str();
108           
109           	    char cmd[1024];
110           	    sprintf(cmd, "cvs update -r %s %s", rev.c_str(), file.c_str());
111           	    printf("%s\n", cmd);
112           	    system(cmd);
113           	    found_bug = false;
114           	}
115               }
116           
117               return 0;
118           }