From 9d6f205073020bd716000d4857a3053e5b9b173f Mon Sep 17 00:00:00 2001 From: Galen Guyer Date: Mon, 26 Apr 2021 11:42:33 -0400 Subject: Add comments to composer source --- composer.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'composer.c') diff --git a/composer.c b/composer.c index ee79b3d..fd67641 100644 --- a/composer.c +++ b/composer.c @@ -12,22 +12,33 @@ int main(int argc, char** argv) { exit(1); } + // Get all files matching the given pattern in the current directory glob_t glob_buf; glob("docker-compose.*.yaml", 0, NULL, &glob_buf); + // Create the char* args array for all the arguments we'll be passing in char* args[argc+2+(2*glob_buf.gl_pathc)]; + + // Set the base command and file args[0] = COMMAND; args[1] = "-f"; args[2] = "docker-compose.yaml"; + + // For each path found by glob, append -f [PATH] to args for(size_t i = 0; i < glob_buf.gl_pathc; i++) { args[(2*i)+3] = "-f"; args[(2*i)+4] = glob_buf.gl_pathv[i]; } + + // Append all command line arguments passed into composer for (int i = 1; i < argc; i++) { args[2+(2*glob_buf.gl_pathc)+i] = argv[i]; } + + // Set the final arg to NULL as expected by execvp args[argc+2+(2*glob_buf.gl_pathc)] = NULL; + // Run the command and print an error if it fails int result = execvp(COMMAND, args); if (result < 0) { perror(COMMAND); -- cgit v1.2.3