ref: 9ec38f3162c5c7f1a7fe136bab160e76df13a7ba
dir: /query.c/
#include <u.h> #include <libc.h> #include "git.h" #pragma varargck type "P" void int fullpath; int changes; char *path[128]; int npath; int Pfmt(Fmt *f) { int i, n; n = 0; for(i = 0; i < npath; i++) n += fmtprint(f, "%s/", path[i]); return n; } void difftrees(Hash ah, Hash bh) { Dirent *ap, *bp, *ae, *be; Object *a, *b; int c; if((a = readobject(ah)) == nil) sysfatal("bad hash %H", ah); if((b = readobject(bh)) == nil) sysfatal("bad hash %H", bh); if(a->type != b->type) return; switch(a->type){ case GCommit: difftrees(a->commit->tree, b->commit->tree); break; case GTree: ap = a->tree->ent; ae = ap + a->tree->nent; bp = b->tree->ent; be = bp + b->tree->nent; while(ap != ae && bp != be){ c = strcmp(ap->name, bp->name); if(c == 0){ if(ap->mode != bp->mode || !hasheq(&ap->h, &bp->h)) { if(!(ap->mode & DMDIR) || !(bp->mode & DMDIR)) print("~ %P%s\n", ap->name); if(ap->mode & DMDIR || bp->mode & DMDIR){ if(npath >= nelem(path)) sysfatal("path too deep"); path[npath++] = ap->name; difftrees(ap->h, bp->h); npath--; } } ap++; bp++; }else if(c < 0){ print("- %P%s\n", ap->name); ap++; }else if(c > 0){ print("+ %P%s\n", bp->name); bp++; } } break; } } void usage(void) { fprint(2, "usage: %s [-pc] query\n", argv0); exits("usage"); } void main(int argc, char **argv) { int i, j, n; Hash *h; char *p, *e; char query[2048]; ARGBEGIN{ case 'p': fullpath++; break; case 'c': changes++; break; default: usage(); break; }ARGEND; gitinit(); fmtinstall('P', Pfmt); p = query; e = query + nelem(query); for(i = 0; i < argc; i++) p = seprint(p, e, "%s ", argv[i]); if((n = resolverefs(&h, query)) == -1) sysfatal("resolve %s: %r", argv[i]); if(changes){ if(n != 2) sysfatal("diff: need 2 commits, got %d", n); difftrees(h[0], h[1]); }else{ p = (fullpath ? "/mnt/git/object/" : ""); for(j = 0; j < n; j++) print("%s%H\n", p, h[j]); } exits(nil); }