1 | |
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2 | /* |
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3 | * Rappture Encode Python Interface |
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4 | * |
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5 | * ====================================================================== |
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6 | * Derrick S. Kearney, Purdue University |
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7 | * Copyright (c) 2004-2007 Purdue Research Foundation |
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8 | * |
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9 | * See the file "license.terms" for information on usage and |
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10 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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11 | * ====================================================================== |
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12 | */ |
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13 | #include <Python.h> |
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14 | #include <RpEncode.h> |
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15 | |
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16 | static PyObject *ErrorObject; |
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17 | |
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18 | PyDoc_STRVAR(RpEncode_isbinary_doc, |
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19 | "isbinary(data)\n\ |
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20 | \n\ |
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21 | Check to see if there are binary characters\n\ |
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22 | in the provided data."); |
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23 | |
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24 | static PyObject* |
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25 | RpEncode_isbinary(PyObject *self, PyObject *args, PyObject *keywds) |
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26 | { |
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27 | const char* data = NULL; |
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28 | int dlen = 0; |
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29 | PyObject* rv = NULL; |
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30 | |
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31 | static char *kwlist[] = { |
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32 | (char *)"data", |
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33 | NULL |
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34 | }; |
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35 | |
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36 | if (PyTuple_Size(args) != 1) { |
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37 | PyErr_SetString(PyExc_TypeError,"isbinary() takes exactly 1 argument"); |
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38 | return NULL; |
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39 | } |
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40 | |
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41 | if (!PyArg_ParseTupleAndKeywords(args, keywds, "s#", |
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42 | kwlist, &data, &dlen)) { |
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43 | PyErr_SetString(PyExc_TypeError,"isbinary() takes exactly 1 argument"); |
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44 | return NULL; |
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45 | } |
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46 | |
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47 | rv = PyFloat_FromDouble(Rappture::encoding::isBinary(data,dlen)); |
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48 | return rv; |
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49 | } |
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50 | |
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51 | PyDoc_STRVAR(RpEncode_encode_doc, |
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52 | "encode(data,flags)\n\ |
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53 | \n\ |
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54 | Encode the provided data with gzip compression and base64 \n\ |
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55 | according to the provided flags"); |
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56 | |
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57 | static PyObject* |
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58 | RpEncode_encode(PyObject *self, PyObject *args, PyObject *keywds) |
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59 | { |
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60 | const char* data = NULL; |
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61 | int dlen = 0; |
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62 | int flags = 0; |
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63 | PyObject* rv = NULL; |
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64 | Rappture::Outcome err; |
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65 | |
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66 | static char *kwlist[] = { |
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67 | (char *)"data", |
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68 | (char *)"flags", |
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69 | NULL |
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70 | }; |
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71 | |
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72 | if (PyTuple_Size(args) != 2) { |
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73 | PyErr_SetString(PyExc_TypeError,"encode() takes exactly 2 arguments"); |
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74 | return NULL; |
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75 | } |
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76 | |
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77 | if (!PyArg_ParseTupleAndKeywords(args, keywds, "s#i", |
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78 | kwlist, &data, &dlen, &flags)) { |
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79 | PyErr_SetString(PyExc_TypeError,"encode() takes exactly 2 arguments"); |
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80 | return NULL; |
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81 | } |
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82 | |
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83 | Rappture::Buffer buf(data, dlen); |
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84 | if (!Rappture::encoding::encode(err, buf, flags)) { |
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85 | std::string outStr; |
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86 | |
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87 | outStr = err.remark(); |
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88 | outStr += "\n"; |
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89 | outStr += err.context(); |
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90 | PyErr_SetString(PyExc_RuntimeError, outStr.c_str()); |
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91 | buf.clear(); |
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92 | return NULL; |
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93 | } |
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94 | rv = PyString_FromStringAndSize(buf.bytes(),buf.size()); |
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95 | return rv; |
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96 | } |
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97 | |
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98 | PyDoc_STRVAR(RpEncode_decode_doc, |
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99 | "decode(data,flags)\n\ |
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100 | \n\ |
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101 | Decode the provided data with gzip compression and base64 \n\ |
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102 | according to the provided flags"); |
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103 | |
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104 | static PyObject* |
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105 | RpEncode_decode(PyObject *self, PyObject *args, PyObject *keywds) |
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106 | { |
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107 | const char* data = NULL; |
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108 | int dlen = 0; |
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109 | int flags = 0; |
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110 | PyObject* rv = NULL; |
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111 | Rappture::Outcome err; |
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112 | |
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113 | static char *kwlist[] = { |
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114 | (char *)"data", |
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115 | (char *)"flags", |
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116 | NULL |
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117 | }; |
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118 | |
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119 | if (PyTuple_Size(args) != 2) { |
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120 | PyErr_SetString(PyExc_TypeError,"decode() takes exactly 2 arguments"); |
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121 | return NULL; |
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122 | } |
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123 | |
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124 | if (!PyArg_ParseTupleAndKeywords(args, keywds, "s#i", |
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125 | kwlist, &data, &dlen, &flags)) { |
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126 | PyErr_SetString(PyExc_TypeError,"decode() takes exactly 2 arguments"); |
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127 | return NULL; |
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128 | } |
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129 | |
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130 | Rappture::Buffer buf(data, dlen); |
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131 | if (!Rappture::encoding::decode(err, buf, flags)) { |
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132 | std::string outStr; |
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133 | |
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134 | outStr = err.remark(); |
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135 | outStr += "\n"; |
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136 | outStr += err.context(); |
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137 | PyErr_SetString(PyExc_RuntimeError,outStr.c_str()); |
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138 | return NULL; |
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139 | } |
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140 | rv = PyString_FromStringAndSize(buf.bytes(),buf.size()); |
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141 | return rv; |
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142 | } |
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143 | |
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144 | /* ---------- */ |
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145 | |
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146 | |
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147 | /* List of functions defined in the module */ |
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148 | |
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149 | static PyMethodDef RpEncode_Methods[] = { |
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150 | |
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151 | {"isbinary", (PyCFunction)RpEncode_isbinary, METH_VARARGS|METH_KEYWORDS, |
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152 | RpEncode_isbinary_doc}, |
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153 | {"encode", (PyCFunction)RpEncode_encode, METH_VARARGS|METH_KEYWORDS, |
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154 | RpEncode_encode_doc}, |
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155 | {"decode", (PyCFunction)RpEncode_decode, METH_VARARGS|METH_KEYWORDS, |
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156 | RpEncode_decode_doc}, |
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157 | |
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158 | {NULL, NULL} /* sentinel */ |
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159 | }; |
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160 | |
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161 | PyDoc_STRVAR(module_doc, "Rappture Encode Module for Python."); |
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162 | |
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163 | /* Initialization function for the module */ |
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164 | |
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165 | PyMODINIT_FUNC |
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166 | initencoding(void) |
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167 | { |
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168 | PyObject *m; |
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169 | |
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170 | /* Create the module and add the functions */ |
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171 | m = Py_InitModule3("encoding", RpEncode_Methods, module_doc); |
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172 | |
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173 | if (ErrorObject == NULL) { |
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174 | ErrorObject = PyErr_NewException((char *)"Rappture.encoding.error", |
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175 | NULL, NULL); |
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176 | if (ErrorObject == NULL) { |
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177 | return; |
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178 | } |
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179 | } |
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180 | Py_INCREF(ErrorObject); |
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181 | PyModule_AddObject(m, "error", ErrorObject); |
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182 | |
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183 | return; |
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184 | } |
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