X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/ff371080d8672b94ef289f1162704e74959b4ddf..27da8141d21cfbfc29675510737ee05bdfd4a2b1:/methods/rred.cc diff --git a/methods/rred.cc b/methods/rred.cc index f42c7a072..2a70a9f91 100644 --- a/methods/rred.cc +++ b/methods/rred.cc @@ -1,10 +1,13 @@ // Includes /*{{{*/ +#include + #include #include #include #include #include #include +#include #include #include @@ -12,6 +15,7 @@ #include #include #include +#include #include /*}}}*/ /** \brief RredMethod - ed-style incremential patch method {{{ @@ -33,11 +37,14 @@ class RredMethod : public pkgAcqMethod { // return values enum State {ED_OK, ED_ORDERING, ED_PARSER, ED_FAILURE, MMAP_FAILED}; - State applyFile(FILE *ed_cmds, FILE *in_file, FILE *out_file, + State applyFile(FileFd &ed_cmds, FILE *in_file, FILE *out_file, unsigned long &line, char *buffer, Hashes *hash) const; void ignoreLineInFile(FILE *fin, char *buffer) const; + void ignoreLineInFile(FileFd &fin, char *buffer) const; void copyLinesFromFileToFile(FILE *fin, FILE *fout, unsigned int lines, Hashes *hash, char *buffer) const; + void copyLinesFromFileToFile(FileFd &fin, FILE *fout, unsigned int lines, + Hashes *hash, char *buffer) const; State patchFile(FileFd &Patch, FileFd &From, FileFd &out_file, Hashes *hash) const; State patchMMap(FileFd &Patch, FileFd &From, FileFd &out_file, Hashes *hash) const; @@ -47,7 +54,7 @@ protected: virtual bool Fetch(FetchItem *Itm); public: - RredMethod() : pkgAcqMethod("1.1",SingleInstance | SendConfig) {}; + RredMethod() : pkgAcqMethod("1.1",SingleInstance | SendConfig), Debug(false) {}; }; /*}}}*/ /** \brief applyFile - in reverse order with a tail recursion {{{ @@ -65,10 +72,10 @@ public: * \param hash the created file for correctness * \return the success State of the ed command executor */ -RredMethod::State RredMethod::applyFile(FILE *ed_cmds, FILE *in_file, FILE *out_file, +RredMethod::State RredMethod::applyFile(FileFd &ed_cmds, FILE *in_file, FILE *out_file, unsigned long &line, char *buffer, Hashes *hash) const { // get the current command and parse it - if (fgets(buffer, BUF_SIZE, ed_cmds) == NULL) { + if (ed_cmds.ReadLine(buffer, BUF_SIZE) == NULL) { if (Debug == true) std::clog << "rred: encounter end of file - we can start patching now." << std::endl; line = 0; @@ -123,7 +130,7 @@ RredMethod::State RredMethod::applyFile(FILE *ed_cmds, FILE *in_file, FILE *out_ unsigned char mode = *idx; // save the current position - unsigned const long pos = ftell(ed_cmds); + unsigned const long long pos = ed_cmds.Tell(); // if this is add or change then go to the next full stop unsigned int data_length = 0; @@ -157,7 +164,7 @@ RredMethod::State RredMethod::applyFile(FILE *ed_cmds, FILE *in_file, FILE *out_ // include data from ed script if (mode == MODE_CHANGED || mode == MODE_ADDED) { - fseek(ed_cmds, pos, SEEK_SET); + ed_cmds.Seek(pos); copyLinesFromFileToFile(ed_cmds, out_file, data_length, hash, buffer); } @@ -183,6 +190,18 @@ void RredMethod::copyLinesFromFileToFile(FILE *fin, FILE *fout, unsigned int lin } } /*}}}*/ +void RredMethod::copyLinesFromFileToFile(FileFd &fin, FILE *fout, unsigned int lines,/*{{{*/ + Hashes *hash, char *buffer) const { + while (0 < lines--) { + do { + fin.ReadLine(buffer, BUF_SIZE); + size_t const written = fwrite(buffer, 1, strlen(buffer), fout); + hash->Add((unsigned char*)buffer, written); + } while (strlen(buffer) == (BUF_SIZE - 1) && + buffer[BUF_SIZE - 2] != '\n'); + } +} + /*}}}*/ void RredMethod::ignoreLineInFile(FILE *fin, char *buffer) const { /*{{{*/ fgets(buffer, BUF_SIZE, fin); while (strlen(buffer) == (BUF_SIZE - 1) && @@ -192,16 +211,24 @@ void RredMethod::ignoreLineInFile(FILE *fin, char *buffer) const { /*{{{*/ } } /*}}}*/ +void RredMethod::ignoreLineInFile(FileFd &fin, char *buffer) const { /*{{{*/ + fin.ReadLine(buffer, BUF_SIZE); + while (strlen(buffer) == (BUF_SIZE - 1) && + buffer[BUF_SIZE - 2] != '\n') { + fin.ReadLine(buffer, BUF_SIZE); + buffer[0] = ' '; + } +} + /*}}}*/ RredMethod::State RredMethod::patchFile(FileFd &Patch, FileFd &From, /*{{{*/ FileFd &out_file, Hashes *hash) const { char buffer[BUF_SIZE]; FILE* fFrom = fdopen(From.Fd(), "r"); - FILE* fPatch = fdopen(Patch.Fd(), "r"); FILE* fTo = fdopen(out_file.Fd(), "w"); /* we do a tail recursion to read the commands in the right order */ unsigned long line = -1; // assign highest possible value - State const result = applyFile(fPatch, fFrom, fTo, line, buffer, hash); + State const result = applyFile(Patch, fFrom, fTo, line, buffer, hash); /* read the rest from infile */ if (result == ED_OK) { @@ -214,7 +241,9 @@ RredMethod::State RredMethod::patchFile(FileFd &Patch, FileFd &From, /*{{{*/ return result; } /*}}}*/ -struct EdCommand { /*{{{*/ +/* struct EdCommand {{{*/ +#ifdef _POSIX_MAPPED_FILES +struct EdCommand { size_t data_start; size_t data_end; size_t data_lines; @@ -223,6 +252,7 @@ struct EdCommand { /*{{{*/ char type; }; #define IOV_COUNT 1024 /* Don't really want IOV_MAX since it can be arbitrarily large */ +#endif /*}}}*/ RredMethod::State RredMethod::patchMMap(FileFd &Patch, FileFd &From, /*{{{*/ FileFd &out_file, Hashes *hash) const { @@ -429,7 +459,7 @@ bool RredMethod::Fetch(FetchItem *Itm) /*{{{*/ { Debug = _config->FindB("Debug::pkgAcquire::RRed", false); URI Get = Itm->Uri; - string Path = Get.Host + Get.Path; // To account for relative paths + std::string Path = Get.Host + Get.Path; // To account for relative paths FetchResult Res; Res.Filename = Itm->DestFile; @@ -445,8 +475,8 @@ bool RredMethod::Fetch(FetchItem *Itm) /*{{{*/ // Open the source and destination files (the d'tor of FileFd will do // the cleanup/closing of the fds) FileFd From(Path,FileFd::ReadOnly); - FileFd Patch(Path+".ed",FileFd::ReadOnly); - FileFd To(Itm->DestFile,FileFd::WriteEmpty); + FileFd Patch(Path+".ed",FileFd::ReadOnly, FileFd::Gzip); + FileFd To(Itm->DestFile,FileFd::WriteAtomic); To.EraseOnFailure(); if (_error->PendingError() == true) return false; @@ -456,9 +486,9 @@ bool RredMethod::Fetch(FetchItem *Itm) /*{{{*/ State const result = patchMMap(Patch, From, To, &Hash); if (result == MMAP_FAILED) { // retry with patchFile - lseek(Patch.Fd(), 0, SEEK_SET); - lseek(From.Fd(), 0, SEEK_SET); - To.Open(Itm->DestFile,FileFd::WriteEmpty); + Patch.Seek(0); + From.Seek(0); + To.Open(Itm->DestFile,FileFd::WriteAtomic); if (_error->PendingError() == true) return false; if (patchFile(Patch, From, To, &Hash) != ED_OK) { @@ -482,7 +512,7 @@ bool RredMethod::Fetch(FetchItem *Itm) /*{{{*/ and use the access time from the "old" file */ struct stat BufBase, BufPatch; if (stat(Path.c_str(),&BufBase) != 0 || - stat(string(Path+".ed").c_str(),&BufPatch) != 0) + stat(std::string(Path+".ed").c_str(),&BufPatch) != 0) return _error->Errno("stat",_("Failed to stat")); struct utimbuf TimeBuf;