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      1 /*
      2   Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization
      3   dedicated to making software imaging solutions freely available.
      4 
      5   You may not use this file except in compliance with the License.
      6   obtain a copy of the License at
      7 
      8     http://www.imagemagick.org/script/license.php
      9 
     10   Unless required by applicable law or agreed to in writing, software
     11   distributed under the License is distributed on an "AS IS" BASIS,
     12   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13   See the License for the specific language governing permissions and
     14   limitations under the License.
     15 
     16   MagickWand convert command-line method.
     17 */
     18 #ifndef _SCRIPT_TOKEN_H
     19 #define _SCRIPT_TOKEN_H
     20 
     21 #if defined(__cplusplus) || defined(c_plusplus)
     22 extern "C" {
     23 #endif
     24 
     25 /* Status of the Stream */
     26 typedef enum {
     27   TokenStatusOK = 0,
     28   TokenStatusEOF,
     29   TokenStatusBadQuotes,
     30   TokenStatusBinary,
     31   TokenStatusMemoryFailed
     32 } TokenStatus;
     33 
     34 /* Initial length is MagickPathExtent/64 => 64  (divisor is a power of 4)
     35    most tokens are never larger than this, so no need to waste memory!
     36    Also no CLI option is larger than about 40 characters!
     37 */
     38 #define INITAL_TOKEN_LENGTH  64
     39 typedef struct
     40 {
     41   FILE
     42     *stream;        /* the file stream we are reading from */
     43 
     44   MagickBooleanType
     45     opened;         /* was that stream opened? */
     46 
     47   char
     48     *token;         /* array of characters to holding details of he token */
     49 
     50   size_t
     51     length,         /* length of token char array */
     52     curr_line,      /* current location in script file */
     53     curr_column,
     54     token_line,      /* start of last token (option or argument) */
     55     token_column;
     56 
     57   TokenStatus
     58     status;         /* Have we reached EOF? see Token Status */
     59 
     60   size_t
     61     signature;
     62 } ScriptTokenInfo;
     63 
     64 
     65 extern WandExport ScriptTokenInfo
     66   *AcquireScriptTokenInfo(const char *),
     67   *DestroyScriptTokenInfo(ScriptTokenInfo *);
     68 
     69 extern WandExport MagickBooleanType
     70   GetScriptToken(ScriptTokenInfo *);
     71 
     72 #if defined(__cplusplus) || defined(c_plusplus)
     73 }
     74 #endif
     75 
     76 #endif
     77