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1 | office | 1 | /** |
2 | * @file emncd.c |
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3 | * @author Ambroz Bizjak <ambrop7@gmail.com> |
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4 | * |
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5 | * @section LICENSE |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * 3. Neither the name of the author nor the |
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15 | * names of its contributors may be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
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19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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21 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | |||
30 | #include <stdlib.h> |
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31 | #include <string.h> |
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32 | |||
33 | #include <misc/version.h> |
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34 | #include <misc/debug.h> |
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35 | #include <base/BLog.h> |
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36 | #include <system/BTime.h> |
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37 | #include <system/BReactor.h> |
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38 | #include <ncd/NCDInterpreter.h> |
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39 | #include <ncd/NCDConfigParser.h> |
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40 | |||
41 | #include <generated/blog_channel_ncd.h> |
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42 | |||
43 | static BReactor reactor; |
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44 | static int running; |
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45 | static NCDInterpreter interpreter; |
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46 | |||
47 | static void interpreter_handler_finished (void *user, int exit_code) |
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48 | { |
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49 | ASSERT(running) |
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50 | |||
51 | fprintf(stderr, "--- interpreter terminated ---\n"); |
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52 | |||
53 | NCDInterpreter_Free(&interpreter); |
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54 | |||
55 | running = 0; |
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56 | } |
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57 | |||
58 | __attribute__((used)) |
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59 | int main () |
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60 | { |
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61 | BLog_InitStderr(); |
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62 | |||
63 | fprintf(stderr, "--- initializing emncd version "GLOBAL_VERSION" ---\n"); |
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64 | |||
65 | BTime_Init(); |
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66 | |||
67 | BReactor_EmscriptenInit(&reactor); |
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68 | |||
69 | running = 0; |
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70 | |||
71 | return 0; |
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72 | } |
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73 | |||
74 | __attribute__((used)) |
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75 | void emncd_start (const char *program_text, int loglevel) |
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76 | { |
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77 | ASSERT(program_text); |
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78 | ASSERT(loglevel >= 0); |
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79 | ASSERT(loglevel <= BLOG_DEBUG); |
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80 | |||
81 | if (running) { |
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82 | fprintf(stderr, "--- cannot start, interpreter is already running! ---\n"); |
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83 | return; |
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84 | } |
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85 | |||
86 | for (int i = 0; i < BLOG_NUM_CHANNELS; i++) { |
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87 | BLog_SetChannelLoglevel(i, loglevel); |
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88 | } |
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89 | |||
90 | // parse program |
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91 | NCDProgram program; |
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92 | if (!NCDConfigParser_Parse((char *)program_text ,strlen(program_text), &program)) { |
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93 | fprintf(stderr, "--- error: failed to parse the program ---\n"); |
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94 | return; |
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95 | } |
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96 | |||
97 | // include commands are not implemented currently |
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98 | if (NCDProgram_ContainsElemType(&program, NCDPROGRAMELEM_INCLUDE) || NCDProgram_ContainsElemType(&program, NCDPROGRAMELEM_INCLUDE_GUARD)) { |
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99 | fprintf(stderr, "--- error: include mechanism is not supported in emncd ---\n"); |
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100 | NCDProgram_Free(&program); |
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101 | return; |
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102 | } |
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103 | |||
104 | fprintf(stderr, "--- starting interpreter ---\n"); |
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105 | |||
106 | struct NCDInterpreter_params params; |
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107 | params.handler_finished = interpreter_handler_finished; |
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108 | params.user = NULL; |
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109 | params.retry_time = 5000; |
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110 | params.extra_args = NULL; |
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111 | params.num_extra_args = 0; |
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112 | params.reactor = &reactor; |
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113 | |||
114 | if (!NCDInterpreter_Init(&interpreter, program, params)) { |
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115 | fprintf(stderr, "--- failed to initialize the interpreter ---\n"); |
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116 | return; |
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117 | } |
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118 | |||
119 | running = 1; |
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120 | |||
121 | BReactor_EmscriptenSync(&reactor); |
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122 | } |
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123 | |||
124 | __attribute__((used)) |
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125 | void emncd_stop (void) |
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126 | { |
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127 | if (!running) { |
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128 | fprintf(stderr, "--- cannot request termination, interpreter is not running! ---\n"); |
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129 | return; |
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130 | } |
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131 | |||
132 | fprintf(stderr, "--- requesting interpreter termination ---\n"); |
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133 | |||
134 | NCDInterpreter_RequestShutdown(&interpreter, 0); |
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135 | |||
136 | BReactor_EmscriptenSync(&reactor); |
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137 | } |