ref: 53fa826a8a695bcfade5c47f636f719c71e96b98
dir: /sys/src/cmd/git/query.c/
#include <u.h> #include <libc.h> #include "git.h" #pragma varargck type "P" void int fullpath; int changes; int reverse; 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 showdir(Hash dh, char *dname, char m) { Dirent *p, *e; Object *d; path[npath++] = dname; if((d = readobject(dh)) == nil) sysfatal("bad hash %H", dh); assert(d->type == GTree); p = d->tree->ent; e = p + d->tree->nent; for(; p != e; p++){ if(p->ismod) continue; if(p->mode & DMDIR) showdir(p->h, p->name, m); else print("%c %P%s\n", m, p->name); } print("%c %P\n", m); unref(d); npath--; } void show(Dirent *e, char m) { if(e->mode & DMDIR) showdir(e->h, e->name, m); else print("%c %P%s\n", m, e->name); } void difftrees(Object *a, Object *b) { Dirent *ap, *bp, *ae, *be; int c; ap = ae = nil; bp = be = nil; if(a != nil){ if(a->type != GTree) return; ap = a->tree->ent; ae = ap + a->tree->nent; } if(b != nil){ if(b->type != GTree) return; 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)) goto next; if(ap->mode != bp->mode) print("! %P%s\n", ap->name); else 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; if((a = readobject(ap->h)) == nil) sysfatal("bad hash %H", ap->h); if((b = readobject(bp->h)) == nil) sysfatal("bad hash %H", bp->h); difftrees(a, b); unref(a); unref(b); npath--; } next: ap++; bp++; }else if(c < 0) { show(ap, '-'); ap++; }else if(c > 0){ show(bp, '+'); bp++; } } for(; ap != ae; ap++) show(ap, '-'); for(; bp != be; bp++) show(bp, '+'); } void diffcommits(Hash ah, Hash bh) { Object *a, *b, *at, *bt; at = nil; bt = nil; if(!hasheq(&ah, &Zhash) && (a = readobject(ah)) != nil){ if(a->type != GCommit) sysfatal("not commit: %H", ah); if((at = readobject(a->commit->tree)) == nil) sysfatal("bad hash %H", a->commit->tree); unref(a); } if(!hasheq(&bh, &Zhash) && (b = readobject(bh)) != nil){ if(b->type != GCommit) sysfatal("not commit: %H", ah); if((bt = readobject(b->commit->tree)) == nil) sysfatal("bad hash %H", b->commit->tree); unref(b); } difftrees(at, bt); unref(at); unref(bt); } void usage(void) { fprint(2, "usage: %s [-pcr] query\n", argv0); exits("usage"); } void main(int argc, char **argv) { int i, j, n; Hash *h; char *p, *e, *s, *objpfx; char query[2048], repo[512]; ARGBEGIN{ case 'd': chattygit++; break; case 'p': fullpath++; break; case 'c': changes++; break; case 'r': reverse ^= 1; break; default: usage(); break; }ARGEND; gitinit(); fmtinstall('P', Pfmt); if(argc == 0) usage(); if(findrepo(repo, sizeof(repo)) == -1) sysfatal("find root: %r"); if(chdir(repo) == -1) sysfatal("chdir: %r"); if((objpfx = smprint("%s/.git/fs/object/", repo)) == nil) sysfatal("smprint: %r"); s = ""; p = query; e = query + nelem(query); for(i = 0; i < argc; i++){ p = seprint(p, e, "%s%s", s, argv[i]); s = " "; } if((n = resolverefs(&h, query)) == -1) sysfatal("resolve: %r"); if(changes){ for(i = 1; i < n; i++) diffcommits(h[0], h[i]); }else{ p = (fullpath ? objpfx : ""); for(j = 0; j < n; j++) print("%s%H\n", p, h[reverse ? n - 1 - j : j]); } exits(nil); }