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authorDavid Kalnischkies <kalnischkies@gmail.com>2011-12-18 01:22:04 +0100
committerDavid Kalnischkies <kalnischkies@gmail.com>2011-12-18 01:22:04 +0100
commit29966fd1cc2bab68777e85b9070dba7821a58d36 (patch)
tree17a540fde8d608452f878bbddaffca412cc3edf6 /methods
parent40468850491c4f5bc7060763a6f03cdc570d514e (diff)
implement the fallback method of rred by using the FileFd and the included
ReadLine instead of accessing the files directly with fgets()
Diffstat (limited to 'methods')
-rw-r--r--methods/rred.cc49
1 files changed, 12 insertions, 37 deletions
diff --git a/methods/rred.cc b/methods/rred.cc
index 2a70a9f91..bf9294d96 100644
--- a/methods/rred.cc
+++ b/methods/rred.cc
@@ -37,13 +37,10 @@ class RredMethod : public pkgAcqMethod {
// return values
enum State {ED_OK, ED_ORDERING, ED_PARSER, ED_FAILURE, MMAP_FAILED};
- State applyFile(FileFd &ed_cmds, FILE *in_file, FILE *out_file,
+ State applyFile(FileFd &ed_cmds, FileFd &in_file, FileFd &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,
+ void copyLinesFromFileToFile(FileFd &fin, FileFd &fout, unsigned int lines,
Hashes *hash, char *buffer) const;
State patchFile(FileFd &Patch, FileFd &From, FileFd &out_file, Hashes *hash) const;
@@ -72,7 +69,7 @@ public:
* \param hash the created file for correctness
* \return the success State of the ed command executor
*/
-RredMethod::State RredMethod::applyFile(FileFd &ed_cmds, FILE *in_file, FILE *out_file,
+RredMethod::State RredMethod::applyFile(FileFd &ed_cmds, FileFd &in_file, FileFd &out_file,
unsigned long &line, char *buffer, Hashes *hash) const {
// get the current command and parse it
if (ed_cmds.ReadLine(buffer, BUF_SIZE) == NULL) {
@@ -178,39 +175,19 @@ RredMethod::State RredMethod::applyFile(FileFd &ed_cmds, FILE *in_file, FILE *ou
return ED_OK;
}
/*}}}*/
-void RredMethod::copyLinesFromFileToFile(FILE *fin, FILE *fout, unsigned int lines,/*{{{*/
- Hashes *hash, char *buffer) const {
- while (0 < lines--) {
- do {
- fgets(buffer, BUF_SIZE, fin);
- 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::copyLinesFromFileToFile(FileFd &fin, FILE *fout, unsigned int lines,/*{{{*/
+void RredMethod::copyLinesFromFileToFile(FileFd &fin, FileFd &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);
+ unsigned long long const towrite = strlen(buffer);
+ fout.Write(buffer, towrite);
+ hash->Add((unsigned char*)buffer, towrite);
} 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) &&
- buffer[BUF_SIZE - 2] != '\n') {
- fgets(buffer, BUF_SIZE, fin);
- buffer[0] = ' ';
- }
-}
- /*}}}*/
void RredMethod::ignoreLineInFile(FileFd &fin, char *buffer) const { /*{{{*/
fin.ReadLine(buffer, BUF_SIZE);
while (strlen(buffer) == (BUF_SIZE - 1) &&
@@ -223,20 +200,18 @@ void RredMethod::ignoreLineInFile(FileFd &fin, char *buffer) const { /*{{{*/
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* 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(Patch, fFrom, fTo, line, buffer, hash);
+ State const result = applyFile(Patch, From, out_file, line, buffer, hash);
/* read the rest from infile */
if (result == ED_OK) {
- while (fgets(buffer, BUF_SIZE, fFrom) != NULL) {
- size_t const written = fwrite(buffer, 1, strlen(buffer), fTo);
- hash->Add((unsigned char*)buffer, written);
+ while (From.ReadLine(buffer, BUF_SIZE) != NULL) {
+ unsigned long long const towrite = strlen(buffer);
+ out_file.Write(buffer, towrite);
+ hash->Add((unsigned char*)buffer, towrite);
}
- fflush(fTo);
}
return result;
}