summaryrefslogtreecommitdiffstats
path: root/ftparchive/override.cc
diff options
context:
space:
mode:
Diffstat (limited to 'ftparchive/override.cc')
-rw-r--r--ftparchive/override.cc288
1 files changed, 288 insertions, 0 deletions
diff --git a/ftparchive/override.cc b/ftparchive/override.cc
new file mode 100644
index 0000000..4994d9f
--- /dev/null
+++ b/ftparchive/override.cc
@@ -0,0 +1,288 @@
+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* ######################################################################
+
+ Override
+
+ Store the override file.
+
+ ##################################################################### */
+ /*}}}*/
+// Include Files /*{{{*/
+#include <config.h>
+
+#include <apt-pkg/error.h>
+#include <apt-pkg/strutl.h>
+
+#include <cctype>
+#include <cstdio>
+#include <cstring>
+#include <utility>
+
+#include "override.h"
+
+#include <apti18n.h>
+ /*}}}*/
+
+// Override::ReadOverride - Read the override file /*{{{*/
+// ---------------------------------------------------------------------
+/* This parses the override file and reads it into the map */
+bool Override::ReadOverride(string const &File,bool const &Source)
+{
+ if (File.empty() == true)
+ return true;
+
+ FILE *F = fopen(File.c_str(),"r");
+ if (F == 0)
+ return _error->Errno("fopen",_("Unable to open %s"),File.c_str());
+
+ char Line[1000];
+ unsigned long long Counter = 0;
+ while (fgets(Line,sizeof(Line),F) != 0)
+ {
+ Counter++;
+ Item Itm;
+
+ // Silence
+ for (char *I = Line; *I != 0; I++)
+ if (*I == '#')
+ *I = 0;
+
+ // Strip space leading up to the package name, skip blank lines
+ char *Pkg = Line;
+ for (; isspace(*Pkg) && *Pkg != 0;Pkg++);
+ if (*Pkg == 0)
+ continue;
+
+#define APT_FIND_NEXT_FIELD \
+ for (End++; isspace(*End) != 0 && *End != 0; ++End) \
+ /* skip spaces */ ; \
+ Start = End; \
+ for (; isspace(*End) == 0 && *End != 0; ++End) \
+ /* find end of word */ ;
+
+#define APT_WARNING_MALFORMED_LINE(FIELD) \
+ if (*End == 0) \
+ { \
+ _error->Warning(_("Malformed override %s line %llu (%s)"),File.c_str(), \
+ Counter, FIELD ); \
+ continue; \
+ } \
+ *End = 0;
+
+ // Find the package and zero..
+ char *Start;
+ char *End = Pkg;
+ for (; isspace(*End) == 0 && *End != 0; End++);
+ APT_WARNING_MALFORMED_LINE("pkgname");
+
+ APT_FIND_NEXT_FIELD;
+
+ // Find the priority
+ if (Source == false)
+ {
+ APT_WARNING_MALFORMED_LINE("priority");
+ Itm.Priority = Start;
+
+ APT_FIND_NEXT_FIELD;
+ }
+
+ // Find the Section
+ APT_WARNING_MALFORMED_LINE("section");
+ Itm.FieldOverride["Section"] = Start;
+
+ // Source override files only have the two columns
+ if (Source == true)
+ {
+ Mapping[Pkg] = Itm;
+ continue;
+ }
+
+ // Find the =>
+ for (End++; isspace(*End) != 0 && *End != 0; End++);
+ if (*End != 0)
+ {
+ Start = End;
+ for (; *End != 0 && (End[0] != '=' || End[1] != '>'); End++);
+ if (*End == 0 || strlen(End) < 4)
+ {
+ Itm.OldMaint = "*";
+ Itm.NewMaint = _strstrip(Start);
+ }
+ else
+ {
+ *End = 0;
+ Itm.OldMaint = _strstrip(Start);
+
+ End += 3;
+ Itm.NewMaint = _strstrip(End);
+ }
+ }
+
+ Mapping[Pkg] = Itm;
+ }
+
+ if (ferror(F))
+ _error->Errno("fgets",_("Failed to read the override file %s"),File.c_str());
+ fclose(F);
+ return true;
+}
+ /*}}}*/
+// Override::ReadExtraOverride - Read the extra override file /*{{{*/
+// ---------------------------------------------------------------------
+/* This parses the extra override file and reads it into the map */
+bool Override::ReadExtraOverride(string const &File,bool const &/*Source*/)
+{
+ if (File.empty() == true)
+ return true;
+
+ FILE *F = fopen(File.c_str(),"r");
+ if (F == 0)
+ return _error->Errno("fopen",_("Unable to open %s"),File.c_str());
+
+ char Line[1000];
+ unsigned long long Counter = 0;
+ while (fgets(Line,sizeof(Line),F) != 0)
+ {
+ Counter++;
+
+ // Silence
+ for (char *I = Line; *I != 0; I++)
+ if (*I == '#')
+ *I = 0;
+
+ // Strip space leading up to the package name, skip blank lines
+ char *Pkg = Line;
+ for (; isspace(*Pkg) && *Pkg != 0;Pkg++);
+ if (Pkg == 0)
+ continue;
+
+ // Find the package and zero..
+ char *End = Pkg;
+ for (; isspace(*End) == 0 && *End != 0; End++);
+ if (*End == 0)
+ {
+ _error->Warning(_("Malformed override %s line %llu #1"),File.c_str(),
+ Counter);
+ continue;
+ }
+ *End = 0;
+
+ // Find the field
+ for (End++; isspace(*End) != 0 && *End != 0; End++);
+ char *Field = End;
+ for (; isspace(*End) == 0 && *End != 0; End++);
+ if (*End == 0)
+ {
+ _error->Warning(_("Malformed override %s line %llu #2"),File.c_str(),
+ Counter);
+ continue;
+ }
+ *End = 0;
+
+ // Find the field value
+ for (End++; isspace(*End) != 0 && *End != 0; End++);
+ char *Value = End;
+ for (; *End != 0; End++);
+ for (; isspace(*(End-1)) && End > Value; End--);
+ if (End == Value)
+ {
+ _error->Warning(_("Malformed override %s line %llu #3"),File.c_str(),
+ Counter);
+ continue;
+ }
+ *End = 0;
+
+ Mapping[Pkg].FieldOverride[Field] = Value;
+ }
+
+ if (ferror(F))
+ _error->Errno("fgets",_("Failed to read the override file %s"),File.c_str());
+ fclose(F);
+ return true;
+}
+ /*}}}*/
+
+// Override::GetItem - Get a architecture specific item /*{{{*/
+// ---------------------------------------------------------------------
+/* Returns a override item for the given package and the given architecture.
+ * Treats "all" special
+ */
+Override::Item* Override::GetItem(string const &Package, string const &Architecture)
+{
+ map<string,Item>::const_iterator I = Mapping.find(Package);
+ map<string,Item>::iterator J = Mapping.find(Package + "/" + Architecture);
+
+ if (I == Mapping.end() && J == Mapping.end())
+ {
+ return 0;
+ }
+
+ Item *result = new Item;
+ if (I == Mapping.end()) *result = J->second;
+ else
+ {
+ *result = I->second;
+ if (J != Mapping.end())
+ {
+ Item *R = &J->second;
+ if (R->Priority != "") result->Priority = R->Priority;
+ if (R->OldMaint != "") result->OldMaint = R->OldMaint;
+ if (R->NewMaint != "") result->NewMaint = R->NewMaint;
+ for (map<string,string>::const_iterator foI = R->FieldOverride.begin();
+ foI != R->FieldOverride.end(); ++foI)
+ {
+ result->FieldOverride[foI->first] = foI->second;
+ }
+ }
+ }
+ return result;
+}
+
+
+// Override::Item::SwapMaint - Swap the maintainer field if necessary /*{{{*/
+// ---------------------------------------------------------------------
+/* Returns the new maintainer string after evaluating the rewriting rule. If
+ there is a rule but it does not match then the empty string is returned,
+ also if there was no rewrite rule the empty string is returned. Failed
+ indicates if there was some kind of problem while rewriting. */
+string Override::Item::SwapMaint(string const &Orig,bool &Failed)
+{
+ Failed = false;
+
+ // Degenerate case..
+ if (NewMaint.empty() == true)
+ return OldMaint;
+
+ if (OldMaint == "*")
+ return NewMaint;
+
+ /* James: ancient, eliminate it, however it is still being used in the main
+ override file. Thus it persists.*/
+#if 1
+ // Break OldMaint up into little bits on double slash boundaries.
+ string::const_iterator End = OldMaint.begin();
+ while (1)
+ {
+ string::const_iterator Start = End;
+ for (; End < OldMaint.end() &&
+ (End + 3 >= OldMaint.end() || End[0] != ' ' ||
+ End[1] != '/' || End[2] != '/'); ++End);
+ if (stringcasecmp(Start,End,Orig.begin(),Orig.end()) == 0)
+ return NewMaint;
+
+ if (End >= OldMaint.end())
+ break;
+
+ // Skip the divider and white space
+ for (; End < OldMaint.end() && (*End == '/' || *End == ' '); ++End);
+ }
+#else
+ if (stringcasecmp(OldMaint.begin(),OldMaint.end(),Orig.begin(),Orig.end()) == 0)
+ return NewMaint;
+#endif
+
+ Failed = true;
+ return string();
+}
+ /*}}}*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 15:51:45 +0000