/[dtapublic]/projs/dtats/trunk/shared_source/c_tk_base_7_5_w_mods/tkfilefilter.c

Diff of /projs/dtats/trunk/shared_source/c_tk_base_7_5_w_mods/tkfilefilter.c

Parent Directory | Revision Log | View Patch Patch

-revision 69 by dashley,
Sat Nov  5 10:54:17 2016 UTC
+revision 71 by dashley,
Sat Nov  5 11:07:06 2016 UTC
 Line 1
  /* $Header$ */
  /*
   * tkFileFilter.c --
   *
   *      Process the -filetypes option for the file dialogs on Windows and the
   *      Mac.
   *
   * Copyright (c) 1996 Sun Microsystems, Inc.
   *
   * See the file "license.terms" for information on usage and redistribution
   * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
   *
   * RCS: @(#) $Id: tkfilefilter.c,v 1.1.1.1 2001/06/13 05:00:16 dtashley Exp $
   */
  #include "tkInt.h"
  #include "tkFileFilter.h"
  static int              AddClause _ANSI_ARGS_((
                              Tcl_Interp * interp, FileFilter * filterPtr,
                              char * patternsStr, char * ostypesStr,
                              int isWindows));
  static void             FreeClauses _ANSI_ARGS_((FileFilter * filterPtr));
  static void             FreeGlobPatterns _ANSI_ARGS_((
                              FileFilterClause * clausePtr));
  static void             FreeMacFileTypes _ANSI_ARGS_((
                              FileFilterClause * clausePtr));
  static FileFilter *     GetFilter _ANSI_ARGS_((FileFilterList * flistPtr,
                              char * name));
  /*
   *----------------------------------------------------------------------
   *
   * TkInitFileFilters --
   *
   *      Initializes a FileFilterList data structure. A FileFilterList
   *      must be initialized EXACTLY ONCE before any calls to
   *      TkGetFileFilters() is made. The usual flow of control is:
   *              TkInitFileFilters(&flist);
   *                  TkGetFileFilters(&flist, ...);
   *                  TkGetFileFilters(&flist, ...);
   *                  ...
   *              TkFreeFileFilters(&flist);
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      The fields in flistPtr are initialized.
   *----------------------------------------------------------------------
   */
  void
  TkInitFileFilters(flistPtr)
      FileFilterList * flistPtr;  /* The structure to be initialized. */
  {
      flistPtr->filters = NULL;
      flistPtr->filtersTail = NULL;
      flistPtr->numFilters = 0;
  }
  /*
   *----------------------------------------------------------------------
   *
   * TkGetFileFilters --
   *
   *      This function is called by the Mac and Windows implementation
   *      of tk_getOpenFile and tk_getSaveFile to translate the string
   *      value of the -filetypes option of into an easy-to-parse C
   *      structure (flistPtr). The caller of this function will then use
   *      flistPtr to perform filetype matching in a platform specific way.
   *
   *      flistPtr must be initialized (See comments in TkInitFileFilters).
   *
   * Results:
   *      A standard TCL return value.
   *
   * Side effects:
   *      The fields in flistPtr are changed according to string.
   *----------------------------------------------------------------------
   */
  int
  TkGetFileFilters(interp, flistPtr, string, isWindows)
      Tcl_Interp *interp;         /* Interpreter to use for error reporting. */
      FileFilterList * flistPtr;  /* Stores the list of file filters. */
      char * string;              /* Value of the -filetypes option. */
      int isWindows;              /* True if we are running on Windows. */
  {
      int listArgc;
      char ** listArgv = NULL;
      char ** typeInfo = NULL;
      int code = TCL_OK;
      int i;
      if (Tcl_SplitList(interp, string, &listArgc, &listArgv) != TCL_OK) {
          return TCL_ERROR;
      }
      if (listArgc == 0) {
          goto done;
      }
      /*
       * Free the filter information that have been allocated the previous
       * time -- the -filefilters option may have been used more than once in
       * the command line.
       */
      TkFreeFileFilters(flistPtr);
      for (i = 0; i<listArgc; i++) {
          /*
           * Each file type should have two or three elements: the first one
           * is the name of the type and the second is the filter of the type.
           * The third is the Mac OSType ID, but we don't care about them here.
           */
          int count;
          FileFilter * filterPtr;
          if (Tcl_SplitList(interp, listArgv[i], &count, &typeInfo) != TCL_OK) {
              code = TCL_ERROR;
              goto done;
          }
          if (count != 2 && count != 3) {
              Tcl_AppendResult(interp, "bad file type \"", listArgv[i], "\", ",
                  "should be \"typeName {extension ?extensions ...?} ",
                  "?{macType ?macTypes ...?}?\"", NULL);
              code = TCL_ERROR;
              goto done;
          }
          filterPtr = GetFilter(flistPtr, typeInfo[0]);
          if (count == 2) {
              code = AddClause(interp, filterPtr, typeInfo[1], NULL,
                  isWindows);
          } else {
              code = AddClause(interp, filterPtr, typeInfo[1], typeInfo[2],
                  isWindows);
          }
          if (code != TCL_OK) {
              goto done;
          }
          if (typeInfo) {
              ckfree((char*)typeInfo);
          }
          typeInfo = NULL;
      }
    done:
      if (typeInfo) {
         ckfree((char*)typeInfo);
      }
      if (listArgv) {
          ckfree((char*)listArgv);
      }
      return code;
  }
  /*
   *----------------------------------------------------------------------
   *
   * TkFreeFileFilters --
   *
   *      Frees the malloc'ed file filter information.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      The fields allocated by TkGetFileFilters() are freed.
   *----------------------------------------------------------------------
   */
  void
  TkFreeFileFilters(flistPtr)
      FileFilterList * flistPtr;  /* List of file filters to free */
  {
      FileFilter * filterPtr, *toFree;
      filterPtr=flistPtr->filters;
      while (filterPtr) {
          toFree = filterPtr;
          filterPtr=filterPtr->next;
          FreeClauses(toFree);
          ckfree((char*)toFree->name);
          ckfree((char*)toFree);
      }
      flistPtr->filters = NULL;
  }
  /*
   *----------------------------------------------------------------------
   *
   * AddClause --
   *
   *      Add one FileFilterClause to filterPtr.
   *
   * Results:
   *      A standard TCL result.
   *
   * Side effects:
   *      The list of filter clauses are updated in filterPtr.
   *----------------------------------------------------------------------
   */
  static int AddClause(interp, filterPtr, patternsStr, ostypesStr, isWindows)
      Tcl_Interp * interp;        /* Interpreter to use for error reporting. */
      FileFilter * filterPtr;     /* Stores the new filter clause */
      char * patternsStr;         /* A TCL list of glob patterns. */
      char * ostypesStr;          /* A TCL list of Mac OSType strings. */
      int isWindows;              /* True if we are running on Windows; False
                                   * if we are running on the Mac; Glob
                                   * patterns need to be processed differently
                                   * on these two platforms */
  {
      char ** globList = NULL;
      int globCount;
      char ** ostypeList = NULL;
      int ostypeCount;
      FileFilterClause * clausePtr;
      int i;
      int code = TCL_OK;
      if (Tcl_SplitList(interp, patternsStr, &globCount, &globList)!= TCL_OK) {
          code = TCL_ERROR;
          goto done;
      }
      if (ostypesStr != NULL) {
          if (Tcl_SplitList(interp, ostypesStr, &ostypeCount, &ostypeList)
                  != TCL_OK) {
              code = TCL_ERROR;
              goto done;
          }
          for (i=0; i<ostypeCount; i++) {
              if (strlen(ostypeList[i]) != 4) {
                  Tcl_AppendResult(interp, "bad Macintosh file type \"",
                      ostypeList[i], "\"", NULL);
                  code = TCL_ERROR;
                  goto done;
              }
          }
      }
      /*
       * Add the clause into the list of clauses
       */
      clausePtr = (FileFilterClause*)ckalloc(sizeof(FileFilterClause));
      clausePtr->patterns     = NULL;
      clausePtr->patternsTail = NULL;
      clausePtr->macTypes     = NULL;
      clausePtr->macTypesTail = NULL;
      if (filterPtr->clauses == NULL) {
          filterPtr->clauses = filterPtr->clausesTail = clausePtr;
      } else {
          filterPtr->clausesTail->next = clausePtr;
          filterPtr->clausesTail = clausePtr;
      }
      clausePtr->next = NULL;
      if (globCount > 0 && globList != NULL) {
          for (i=0; i<globCount; i++) {
              GlobPattern * globPtr = (GlobPattern*)ckalloc(sizeof(GlobPattern));
              int len;
              len = (strlen(globList[i]) + 1) * sizeof(char);
              if (globList[i][0] && globList[i][0] != '*') {
                  /*
                   * Prepend a "*" to patterns that do not have a leading "*"
                   */
                  globPtr->pattern = (char*)ckalloc(len+1);
                  globPtr->pattern[0] = '*';
                  strcpy(globPtr->pattern+1, globList[i]);
              }
              else if (isWindows) {
                  if (strcmp(globList[i], "*") == 0) {
                      globPtr->pattern = (char*)ckalloc(4*sizeof(char));
                      strcpy(globPtr->pattern, "*.*");
                  }
                  else if (strcmp(globList[i], "") == 0) {
                      /*
                       * An empty string means "match all files with no
                       * extensions"
                       * BUG: "*." actually matches with all files on Win95
                       */
                      globPtr->pattern = (char*)ckalloc(3*sizeof(char));
                      strcpy(globPtr->pattern, "*.");
                  }
                  else {
                      globPtr->pattern = (char*)ckalloc(len);
                      strcpy(globPtr->pattern, globList[i]);
                  }
              } else {
                  globPtr->pattern = (char*)ckalloc(len);
                  strcpy(globPtr->pattern, globList[i]);
              }
              /*
               * Add the glob pattern into the list of patterns.
               */
              if (clausePtr->patterns == NULL) {
                  clausePtr->patterns = clausePtr->patternsTail = globPtr;
              } else {
                  clausePtr->patternsTail->next = globPtr;
                  clausePtr->patternsTail = globPtr;
              }
              globPtr->next = NULL;
          }
      }
      if (ostypeCount > 0 && ostypeList != NULL) {
          for (i=0; i<ostypeCount; i++) {
              MacFileType * mfPtr = (MacFileType*)ckalloc(sizeof(MacFileType));
              memcpy(&mfPtr->type, ostypeList[i], sizeof(OSType));
              /*
               * Add the Mac type pattern into the list of Mac types
               */
              if (clausePtr->macTypes == NULL) {
                  clausePtr->macTypes = clausePtr->macTypesTail = mfPtr;
              } else {
                  clausePtr->macTypesTail->next = mfPtr;
                  clausePtr->macTypesTail = mfPtr;
              }
              mfPtr->next = NULL;
          }
      }
    done:
      if (globList) {
          ckfree((char*)globList);
      }
      if (ostypeList) {
          ckfree((char*)ostypeList);
      }
      return code;
  }
  /*
   *----------------------------------------------------------------------
   *
   * GetFilter --
   *
   *      Add one FileFilter to flistPtr.
   *
   * Results:
   *      A standard TCL result.
   *
   * Side effects:
   *      The list of filters are updated in flistPtr.
   *----------------------------------------------------------------------
   */
  static FileFilter * GetFilter(flistPtr, name)
      FileFilterList * flistPtr;  /* The FileFilterList that contains the
                                   * newly created filter */
      char * name;                /* Name of the filter. It is usually displayed
                                   * in the "File Types" listbox in the file
                                   * dialogs. */
  {
      FileFilter * filterPtr;
      for (filterPtr=flistPtr->filters; filterPtr; filterPtr=filterPtr->next) {
          if (strcmp(filterPtr->name, name)==0) {
              return filterPtr;
          }
      }
      filterPtr = (FileFilter*)ckalloc(sizeof(FileFilter));
      filterPtr->clauses = NULL;
      filterPtr->clausesTail = NULL;
      filterPtr->name = (char*)ckalloc((strlen(name)+1) * sizeof(char));
      strcpy(filterPtr->name, name);
      if (flistPtr->filters == NULL) {
          flistPtr->filters = flistPtr->filtersTail = filterPtr;
      } else {
          flistPtr->filtersTail->next = filterPtr;
          flistPtr->filtersTail = filterPtr;
      }
      filterPtr->next = NULL;
      ++flistPtr->numFilters;
      return filterPtr;
  }
  /*
   *----------------------------------------------------------------------
   *
   * FreeClauses --
   *
   *      Frees the malloc'ed file type clause
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      The list of clauses in filterPtr->clauses are freed.
   *----------------------------------------------------------------------
   */
  static void
  FreeClauses(filterPtr)
      FileFilter * filterPtr;     /* FileFilter whose clauses are to be freed */
  {
      FileFilterClause * clausePtr, * toFree;
      clausePtr = filterPtr->clauses;
      while (clausePtr) {
          toFree = clausePtr;
          clausePtr=clausePtr->next;
          FreeGlobPatterns(toFree);
          FreeMacFileTypes(toFree);
          ckfree((char*)toFree);
      }
      filterPtr->clauses = NULL;
      filterPtr->clausesTail = NULL;
  }
  /*
   *----------------------------------------------------------------------
   *
   * FreeGlobPatterns --
   *
   *      Frees the malloc'ed glob patterns in a clause
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      The list of glob patterns in clausePtr->patterns are freed.
   *----------------------------------------------------------------------
   */
  static void
  FreeGlobPatterns(clausePtr)
      FileFilterClause * clausePtr;/* The clause whose patterns are to be freed*/
  {
      GlobPattern * globPtr, * toFree;
      globPtr = clausePtr->patterns;
      while (globPtr) {
          toFree = globPtr;
          globPtr=globPtr->next;
          ckfree((char*)toFree->pattern);
          ckfree((char*)toFree);
      }
      clausePtr->patterns = NULL;
  }
  /*
   *----------------------------------------------------------------------
   *
   * FreeMacFileTypes --
   *
   *      Frees the malloc'ed Mac file types in a clause
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      The list of Mac file types in clausePtr->macTypes are freed.
   *----------------------------------------------------------------------
   */
  static void
  FreeMacFileTypes(clausePtr)
      FileFilterClause * clausePtr;  /* The clause whose mac types are to be
                                      * freed */
  {
      MacFileType * mfPtr, * toFree;
      mfPtr = clausePtr->macTypes;
      while (mfPtr) {
          toFree = mfPtr;
          mfPtr=mfPtr->next;
          ckfree((char*)toFree);
      }
      clausePtr->macTypes = NULL;
  }
  /* End of tkfilefilter.c */

 Legend:



Removed from v.69
 


changed lines


 
Added in v.71
 Legend:



Removed from v.69
 


changed lines


 
Added in v.71
-Removed from v.69
+Added in v.71

dashley@gmail.com	ViewVC Help
Powered by ViewVC 1.1.25