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cfspack: add pattern argument

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This commit is contained in:
Virgil Dupras 2019-06-02 16:22:07 -04:00
parent 22e990ed89
commit c317fbdcf9
2 changed files with 21 additions and 6 deletions
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5
tools/cfspack/README.md
View File

@ -1,6 +1,6 @@
# cfspack
A tool/library to pack a directory into a CFS blob and unpack a CFS blob into
A tool/library to pack files into a CFS blob and unpack a CFS blob into
a directory.
## Usage
@ -12,6 +12,9 @@ To pack a directory into a CFS blob, run:
The blob is spit to stdout. If there are subdirectories, they will be prefixes
to the filenames under it.
`cfspack` takes an optional second argument, a "fnmatch" pattern. If specified,
only files patching the pattern will be included.
The program errors out if a file name is too long (> 26 bytes) or too big
(> 0x10000 - 0x20 bytes).

22
tools/cfspack/cfspack.c
View File

@ -1,6 +1,8 @@
#define _GNU_SOURCE
#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include <fnmatch.h>
#define BLKSIZE 0x100
#define HEADERSIZE 0x20
@ -55,7 +57,7 @@ int spitblock(char *fullpath, char *fn)
return 0;
}
int spitdir(char *path, char *prefix)
int spitdir(char *path, char *prefix, char *pattern)
{
DIR *dp;
struct dirent *ep;
@ -79,6 +81,12 @@ int spitdir(char *path, char *prefix)
fprintf(stderr, "Filename too long: %s/%s\n", prefix, ep->d_name);
return 1;
}
if (pattern) {
if (fnmatch(pattern, ep->d_name, FNM_EXTMATCH) != 0) {
continue;
}
}
char fullpath[0x1000];
strcpy(fullpath, path);
strcat(fullpath, "/");
@ -90,7 +98,7 @@ int spitdir(char *path, char *prefix)
}
strcat(newprefix, ep->d_name);
if (ep->d_type == DT_DIR) {
int r = spitdir(fullpath, newprefix);
int r = spitdir(fullpath, newprefix, pattern);
if (r != 0) {
return r;
}
@ -107,11 +115,15 @@ int spitdir(char *path, char *prefix)
int main(int argc, char *argv[])
{
if (argc != 2) {
fprintf(stderr, "Usage: cfspack /path/to/dir\n");
if ((argc > 3) || (argc < 2)) {
fprintf(stderr, "Usage: cfspack /path/to/dir [pattern] \n");
return 1;
}
char *srcpath = argv[1];
return spitdir(srcpath, "");
char *pattern = NULL;
if (argc == 3) {
pattern = argv[2];
}
return spitdir(srcpath, "", pattern);
}