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4598
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1 #ifndef CSTRINGIO_INCLUDED
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2 #define CSTRINGIO_INCLUDED
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3 /*
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4
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5 $Id$
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6
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7 cStringIO C API
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8
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9 Copyright
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10
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11 Copyright 1996 Digital Creations, L.C., 910 Princess Anne
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12 Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
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13 rights reserved. Copyright in this software is owned by DCLC,
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14 unless otherwise indicated. Permission to use, copy and
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15 distribute this software is hereby granted, provided that the
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16 above copyright notice appear in all copies and that both that
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17 copyright notice and this permission notice appear. Note that
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18 any product, process or technology described in this software
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19 may be the subject of other Intellectual Property rights
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20 reserved by Digital Creations, L.C. and are not licensed
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21 hereunder.
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22
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23 Trademarks
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24
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25 Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
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26 All other trademarks are owned by their respective companies.
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27
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28 No Warranty
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29
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30 The software is provided "as is" without warranty of any kind,
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31 either express or implied, including, but not limited to, the
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32 implied warranties of merchantability, fitness for a particular
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33 purpose, or non-infringement. This software could include
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34 technical inaccuracies or typographical errors. Changes are
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35 periodically made to the software; these changes will be
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36 incorporated in new editions of the software. DCLC may make
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37 improvements and/or changes in this software at any time
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38 without notice.
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39
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40 Limitation Of Liability
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41
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42 In no event will DCLC be liable for direct, indirect, special,
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43 incidental, economic, cover, or consequential damages arising
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44 out of the use of or inability to use this software even if
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45 advised of the possibility of such damages. Some states do not
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46 allow the exclusion or limitation of implied warranties or
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47 limitation of liability for incidental or consequential
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48 damages, so the above limitation or exclusion may not apply to
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49 you.
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50
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51 If you have questions regarding this software,
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52 contact:
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53
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54 info@digicool.com
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55 Digital Creations L.C.
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56
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57 (540) 371-6909
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58
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59
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60 This header provides access to cStringIO objects from C.
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61 Functions are provided for calling cStringIO objects and
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62 macros are provided for testing whether you have cStringIO
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63 objects.
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64
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65 Before calling any of the functions or macros, you must initialize
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66 the routines with:
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67
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68 PycStringIO_IMPORT
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69
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70 This would typically be done in your init function.
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71
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72 $Log$
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4902
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73 Revision 2.2 1997/01/06 22:50:12 guido
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74 Jim's latest version
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75
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76 Revision 1.1 1997/01/02 15:18:36 chris
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77 initial version
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4598
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78
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79
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80 */
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81
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82 /* Basic fuctions to manipulate cStringIO objects from C */
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83
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84 /* Read a string. If the last argument is -1, the remainder will be read. */
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85 static int(*PycStringIO_cread)(PyObject *, char **, int)=NULL;
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86
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87 /* Read a line */
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88 static int(*PycStringIO_creadline)(PyObject *, char **)=NULL;
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89
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90 /* Write a string */
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91 static int(*PycStringIO_cwrite)(PyObject *, char *, int)=NULL;
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92
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93 /* Get the cStringIO object as a Python string */
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94 static PyObject *(*PycStringIO_cgetvalue)(PyObject *)=NULL;
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95
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96 /* Create a new output object */
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97 static PyObject *(*PycStringIO_NewOutput)(int)=NULL;
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98
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99 /* Create an input object from a Python string */
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100 static PyObject *(*PycStringIO_NewInput)(PyObject *)=NULL;
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101
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102 /* The Python types for cStringIO input and output objects.
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103 Note that you can do input on an output object.
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104 */
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105 static PyObject *PycStringIO_InputType=NULL, *PycStringIO_OutputType=NULL;
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106
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107 /* These can be used to test if you have one */
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108 #define PycStringIO_InputCheck(O) \
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109 ((O)->ob_type==(PyTypeObject*)PycStringIO_InputType)
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110 #define PycStringIO_OutputCheck(O) \
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111 ((O)->ob_type==(PyTypeObject*)PycStringIO_OutputType)
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112
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113 /* The following is used to implement PycString_IMPORT: */
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114 static PyObject *PycStringIO_Module=NULL, *PycStringIO_CObject=NULL;
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115
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116 #define IMPORT_C_OBJECT(N) \
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117 if((PycStringIO_CObject=PyObject_GetAttrString(PycStringIO_Module, #N))) { \
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118 PycStringIO_ ## N = PyCObject_AsVoidPtr(PycStringIO_CObject); \
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119 Py_DECREF(PycStringIO_CObject); }
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120
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121 #define PycString_IMPORT \
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122 if((PycStringIO_Module=PyImport_ImportModule("cStringIO"))) { \
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123 PycStringIO_InputType=PyObject_GetAttrString(PycStringIO_Module, \
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124 "InputType"); \
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125 PycStringIO_OutputType=PyObject_GetAttrString(PycStringIO_Module, \
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126 "OutputType"); \
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127 IMPORT_C_OBJECT(cread); \
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128 IMPORT_C_OBJECT(creadline); \
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129 IMPORT_C_OBJECT(cwrite); \
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130 IMPORT_C_OBJECT(NewInput); \
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131 IMPORT_C_OBJECT(NewOutput); \
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132 IMPORT_C_OBJECT(cgetvalue); }
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133
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134 #endif /* CSTRINGIO_INCLUDED */
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