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authorMichael Krelin <hacker@klever.net>2005-04-25 16:27:12 (UTC)
committer Michael Krelin <hacker@klever.net>2005-04-25 16:27:12 (UTC)
commita74c677c09774c02d3bc347525fb071f25d25697 (patch) (side-by-side diff)
tree8f28192b802047486998460b0894e90fde480fd3 /lib
parenta83335d1c67d37100a018e8ee4fd6c0ff77ac380 (diff)
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1. bumped version to 0.0.1
2. added utility functions extracted from sitecing
Diffstat (limited to 'lib') (more/less context) (ignore whitespace changes)
-rw-r--r--lib/Makefile.am1
-rw-r--r--lib/util.cc127
2 files changed, 128 insertions, 0 deletions
diff --git a/lib/Makefile.am b/lib/Makefile.am
index a904569..7d44856 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -14,2 +14,3 @@ libkonforka_la_SOURCES = \
exception.cc \
+ util.cc \
pointer_map.cc \
diff --git a/lib/util.cc b/lib/util.cc
new file mode 100644
index 0000000..74039c6
--- a/dev/null
+++ b/lib/util.cc
@@ -0,0 +1,127 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <konforka/util.h>
+
+namespace konforka {
+
+ /*
+ * XXX: this code is borrowed from sitecing as is, although it should be optimized.
+ */
+
+ string normalize_path(const string& p,int o) {
+ const char *s = p.c_str();
+ if( s[0]=='.' && s[1]=='/' )
+ s += 2; // skip leading './'
+ if(o&strip_leading_slash)
+ for(;(*s)=='/';s++);
+ string rv;
+ string::size_type notslash = 0;
+ for(;*s;s++) {
+ if(s[0]=='/') {
+ if(s[1]=='/')
+ continue; // skip duplicate slash
+ if(s[1]=='.' && s[2]=='/') {
+ // '/./' sequence encountered
+ s += 2;
+ continue;
+ }
+ }
+ if(
+ (o&restrict_dotdot) && (
+ ( rv.empty() && s[0]=='.' && s[1]=='.' && s[2]=='/' ) // '^../'
+ ||
+ ( s[0]=='/' && s[1]=='.' && s[2]=='.' && (s[3]=='/' || s[3]==0) ) // '/../' or '/..$'
+ )
+ )
+ throw restricted_sequence_error(CODEPOINT,"restricted updir (..) sequence encountered");
+ rv += *s;
+ if( (*s) !='/' )
+ notslash = rv.length();
+ }
+ if(!(o&strip_trailing_slash))
+ notslash++;
+ if(notslash<rv.length())
+ rv.erase(notslash); // XXX: does this operation have enough sense to be performed?
+ return rv;
+ }
+
+ string dir_name(const string& p) {
+ string::size_type sl = p.find_last_of('/');
+ if(sl==string::npos)
+ return ""; // no slashes -- no dir.
+ string::size_type nosl = p.find_last_not_of('/',sl);
+ if(nosl==string::npos)
+ return ""; // only slashes -- no dir.
+ return p.substr(0,nosl+1);
+ }
+
+ string combine_path(const string& orig,const string& rel,int o) {
+ string r = normalize_path(rel,0);
+ if(r.empty()) {
+ // XXX: this behaviour is questionable.
+ return normalize_path( (o&origin_is_file)?dir_name(orig):orig, strip_leading_slash|restrict_dotdot|strip_trailing_slash);
+ }
+ string rv;
+ if(r[0]=='/') {
+ r.erase(0,1);
+ }else{
+ rv = normalize_path( (o&origin_is_file)?dir_name(orig):orig, restrict_dotdot|strip_trailing_slash);
+ }
+ string::size_type lsl = rv.rfind('/');
+ // iterate through slashes in relative path
+ for(string::size_type sl=r.find('/');sl!=string::npos;sl=r.find('/')) {
+ assert(sl!=0); // sure we don't start with '/' at this point
+ if(sl==1 && r[0]=='.') { // './'
+ r.erase(0,2);
+ }else if(sl==2 && r[0]=='.' && r[1]=='.') { // '../'
+ if(lsl==string::npos) {
+ if(rv.empty() && (o&fail_beyond_root))
+ throw beyond_root_error(CODEPOINT,"went beyond root while combining path");
+ rv.clear();
+ }else{
+ rv.erase(lsl);
+ lsl = rv.rfind('/');
+ }
+ r.erase(0,3);
+ }else{ // 'something/'
+ lsl = rv.length();
+ rv += '/';
+ rv += r.substr(0,sl);
+ r.erase(0,sl+1);
+ }
+ }
+ if(r.empty())
+ return rv+'/';
+ if(r.length()==2 && r[0]=='.' && r[1]=='.') {
+ if(lsl==string::npos) {
+ if(rv.empty() && (o&fail_beyond_root))
+ throw beyond_root_error(CODEPOINT,"went beyond root while combining path");
+ return "/";
+ }else{
+ rv.erase(lsl+1);
+ return rv;
+ }
+ }
+ rv += '/';
+ rv += r;
+ return rv;
+ }
+
+ void make_path(const string& p,mode_t m) {
+ struct stat st;
+ for(string::size_type sl=0;sl!=string::npos;sl=p.find('/',sl+1)) {
+ if(!sl)
+ continue;
+ string pp = p.substr(0,sl);
+ if(stat(pp.c_str(),&st) || !S_ISDIR(st.st_mode)) {
+ if(mkdir(pp.c_str(),m))
+ throw konforka::system_error(CODEPOINT,"failed to mkdir()");
+ }
+ }
+ if(stat(p.c_str(),&st) || !S_ISDIR(st.st_mode)) {
+ if(mkdir(p.c_str(),m))
+ throw konforka::system_error(CODEPOINT,"failed to mkdir()");
+ }
+ }
+
+}