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547 lines
10 KiB
547 lines
10 KiB
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/* #line 1 "user/ansi_parser.rl" */
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#include <esp8266.h>
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#include "ansi_parser.h"
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#include "ansi_parser_callbacks.h"
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#include "ascii.h"
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#include "apars_logging.h"
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/* Ragel constants block */
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/* #line 12 "user/ansi_parser.c" */
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static const char _ansi_actions[] = {
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0, 1, 0, 1, 1, 1, 2, 1,
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3, 1, 4, 1, 5, 1, 6, 1,
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7, 1, 8, 1, 9, 1, 10, 1,
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11, 1, 12, 1, 13, 1, 14, 2,
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3, 6
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};
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static const char _ansi_eof_actions[] = {
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0, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 0, 0, 0, 0, 0
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};
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static const int ansi_start = 1;
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static const int ansi_first_final = 10;
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static const int ansi_error = 0;
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static const int ansi_en_CSI_body = 5;
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static const int ansi_en_STRCMD_body = 7;
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static const int ansi_en_charsetcmd_body = 9;
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static const int ansi_en_main = 1;
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/* #line 11 "user/ansi_parser.rl" */
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// Max nr of CSI parameters
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#define CSI_N_MAX 10
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#define STR_CHAR_MAX 64
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static volatile int cs = -1;
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static volatile bool inside_string = false;
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// public
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volatile u32 ansi_parser_char_cnt = 0;
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void ICACHE_FLASH_ATTR
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ansi_parser_reset(void) {
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if (cs != ansi_start) {
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cs = ansi_start;
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inside_string = false;
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apars_reset_utf8buffer();
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ansi_warn("Parser timeout, state reset");
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}
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}
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#define HISTORY_LEN 10
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#if DEBUG_ANSI
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static char history[HISTORY_LEN + 1];
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#endif
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void ICACHE_FLASH_ATTR
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apars_show_context(void)
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{
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#if DEBUG_ANSI
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char buf1[HISTORY_LEN*3+2];
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char buf2[HISTORY_LEN*3+2];
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char *b1 = buf1;
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char *b2 = buf2;
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char c;
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for(int i=0;i<HISTORY_LEN;i++) {
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c = history[i];
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b1 += sprintf(b1, "%2X ", c);
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if (c < 32 || c > 127) c = '.';
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b2 += sprintf(b2, "%c ", c);
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}
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ansi_dbg("Context: %s", buf2);
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ansi_dbg(" %s", buf1);
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#endif
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}
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/**
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* \brief Linear ANSI chars stream parser
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*
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* Parses a stream of bytes using a Ragel parser. The defined
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* grammar does not use 'unget', so the entire buffer is
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* always processed in a linear manner.
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*
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* \attention -> but always check the Ragel output for 'p--'
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* or 'p -=', that means trouble.
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*
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* \param newdata - array of new chars to process
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* \param len - length of the newdata buffer
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*/
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void ICACHE_FLASH_ATTR
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ansi_parser(char newchar)
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{
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// The CSI code is built here
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static char leadchar;
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static int arg_ni;
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static int arg_cnt;
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static int arg[CSI_N_MAX];
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static char string_buffer[STR_CHAR_MAX];
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static int str_ni;
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// This is used to detect timeout delay (time since last rx char)
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ansi_parser_char_cnt++;
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// Init Ragel on the first run
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if (cs == -1) {
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/* #line 117 "user/ansi_parser.c" */
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{
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cs = ansi_start;
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}
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/* #line 91 "user/ansi_parser.rl" */
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#if DEBUG_ANSI
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memset(history, 0, sizeof(history));
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#endif
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}
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#if DEBUG_ANSI
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for(int i=1; i<HISTORY_LEN; i++) {
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history[i-1] = history[i];
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}
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history[HISTORY_LEN-1] = newchar;
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#endif
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// Handle simple characters immediately (bypass parser)
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if (newchar < ' ') {
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switch (newchar) {
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case ESC:
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if (!inside_string) {
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// Reset state
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cs = ansi_start;
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// now the ESC will be processed by the parser
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}
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break; // proceed to parser
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// Literally passed
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case FF:
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case VT:
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newchar = LF; // translate to LF, like VT100 / xterm do
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case CR:
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case LF:
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case BS:
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apars_handle_plainchar(newchar);
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return;
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case TAB:
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apars_handle_tab();
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return;
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// Select G0 or G1
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case SI:
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apars_handle_chs_switch(0);
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return;
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case SO:
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apars_handle_chs_switch(1);
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return;
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case BEL:
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// bel is also used to terminate OSC
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if (!inside_string) {
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apars_handle_bel();
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return;
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}
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break;
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case ENQ:
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apars_handle_enq();
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return;
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// Cancel the active sequence
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case CAN:
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case SUB:
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cs = ansi_start;
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return;
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default:
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// Discard all others
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return;
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}
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} else {
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// >= ' '
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// bypass the parser for simple characters (speed-up)
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if (cs == ansi_start) {
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apars_handle_plainchar(newchar);
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return;
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}
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}
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// Load new data to Ragel vars
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const char *p = &newchar;
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const char *eof = NULL;
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const char *pe = &newchar + 1;
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// The parser
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/* #line 209 "user/ansi_parser.c" */
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{
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const char *_acts;
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unsigned int _nacts;
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if ( p == pe )
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goto _test_eof;
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if ( cs == 0 )
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goto _out;
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_resume:
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switch ( cs ) {
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case 1:
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switch( (*p) ) {
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case 7: goto tr1;
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case 27: goto tr2;
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}
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goto tr0;
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case 0:
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goto _out;
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case 2:
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switch( (*p) ) {
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case 32: goto tr3;
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case 35: goto tr4;
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case 37: goto tr5;
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case 80: goto tr7;
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case 88: goto tr7;
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case 91: goto tr8;
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case 107: goto tr7;
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}
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if ( (*p) < 64 ) {
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if ( (*p) < 48 ) {
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if ( 40 <= (*p) && (*p) <= 47 )
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goto tr5;
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} else if ( (*p) > 57 ) {
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if ( 60 <= (*p) && (*p) <= 62 )
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goto tr6;
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} else
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goto tr6;
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} else if ( (*p) > 92 ) {
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if ( (*p) < 97 ) {
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if ( 93 <= (*p) && (*p) <= 95 )
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goto tr7;
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} else if ( (*p) > 122 ) {
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if ( 124 <= (*p) && (*p) <= 126 )
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goto tr6;
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} else
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goto tr6;
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} else
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goto tr6;
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goto tr1;
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case 3:
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if ( (*p) > 71 ) {
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if ( 76 <= (*p) && (*p) <= 78 )
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goto tr9;
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} else if ( (*p) >= 70 )
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goto tr9;
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goto tr1;
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case 10:
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switch( (*p) ) {
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case 7: goto tr1;
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case 27: goto tr2;
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}
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goto tr0;
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case 4:
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if ( 48 <= (*p) && (*p) <= 57 )
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goto tr10;
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goto tr1;
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case 5:
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switch( (*p) ) {
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case 59: goto tr13;
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case 64: goto tr14;
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}
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if ( (*p) < 60 ) {
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if ( (*p) > 47 ) {
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if ( 48 <= (*p) && (*p) <= 57 )
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goto tr12;
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} else if ( (*p) >= 32 )
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goto tr11;
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} else if ( (*p) > 63 ) {
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if ( (*p) > 90 ) {
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if ( 96 <= (*p) && (*p) <= 122 )
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goto tr15;
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} else if ( (*p) >= 65 )
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goto tr15;
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} else
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goto tr11;
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goto tr1;
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case 6:
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if ( (*p) == 59 )
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goto tr13;
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if ( (*p) < 64 ) {
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if ( 48 <= (*p) && (*p) <= 57 )
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goto tr12;
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} else if ( (*p) > 90 ) {
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if ( 96 <= (*p) && (*p) <= 122 )
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goto tr15;
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} else
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goto tr15;
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goto tr1;
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case 11:
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goto tr1;
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case 12:
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if ( (*p) == 59 )
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goto tr13;
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if ( (*p) < 64 ) {
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if ( 48 <= (*p) && (*p) <= 57 )
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goto tr12;
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} else if ( (*p) > 90 ) {
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if ( 96 <= (*p) && (*p) <= 122 )
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goto tr15;
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} else
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goto tr15;
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goto tr1;
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case 7:
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switch( (*p) ) {
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case 7: goto tr17;
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case 27: goto tr18;
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}
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goto tr16;
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case 13:
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goto tr1;
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case 8:
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if ( (*p) == 92 )
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goto tr17;
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goto tr1;
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case 9:
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switch( (*p) ) {
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case 7: goto tr1;
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case 27: goto tr1;
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}
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goto tr19;
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case 14:
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goto tr1;
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}
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tr1: cs = 0; goto f0;
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tr0: cs = 1; goto f1;
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tr2: cs = 2; goto _again;
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tr3: cs = 3; goto _again;
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tr4: cs = 4; goto _again;
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tr11: cs = 6; goto f8;
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tr12: cs = 6; goto f9;
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tr13: cs = 6; goto f10;
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tr16: cs = 7; goto f13;
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tr18: cs = 8; goto _again;
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tr5: cs = 10; goto f2;
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tr6: cs = 10; goto f3;
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tr7: cs = 10; goto f4;
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tr8: cs = 10; goto f5;
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tr9: cs = 10; goto f6;
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tr10: cs = 10; goto f7;
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tr15: cs = 11; goto f12;
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tr14: cs = 12; goto f11;
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tr17: cs = 13; goto f14;
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tr19: cs = 14; goto f15;
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f0: _acts = _ansi_actions + 1; goto execFuncs;
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f1: _acts = _ansi_actions + 3; goto execFuncs;
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f5: _acts = _ansi_actions + 5; goto execFuncs;
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f8: _acts = _ansi_actions + 7; goto execFuncs;
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f9: _acts = _ansi_actions + 9; goto execFuncs;
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f10: _acts = _ansi_actions + 11; goto execFuncs;
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f12: _acts = _ansi_actions + 13; goto execFuncs;
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f4: _acts = _ansi_actions + 15; goto execFuncs;
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f13: _acts = _ansi_actions + 17; goto execFuncs;
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f14: _acts = _ansi_actions + 19; goto execFuncs;
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f7: _acts = _ansi_actions + 21; goto execFuncs;
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f3: _acts = _ansi_actions + 23; goto execFuncs;
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f6: _acts = _ansi_actions + 25; goto execFuncs;
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f2: _acts = _ansi_actions + 27; goto execFuncs;
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f15: _acts = _ansi_actions + 29; goto execFuncs;
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f11: _acts = _ansi_actions + 31; goto execFuncs;
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execFuncs:
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_nacts = *_acts++;
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while ( _nacts-- > 0 ) {
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switch ( *_acts++ ) {
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case 0:
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/* #line 185 "user/ansi_parser.rl" */
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{
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ansi_warn("Parser error.");
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apars_show_context();
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inside_string = false; // no longer in string, for sure
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{cs = 1;goto _again;}
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}
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break;
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case 1:
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/* #line 194 "user/ansi_parser.rl" */
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{
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if ((*p) != 0) {
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apars_handle_plainchar((*p));
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}
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}
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break;
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case 2:
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/* #line 202 "user/ansi_parser.rl" */
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{
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// Reset the CSI builder
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leadchar = NUL;
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arg_ni = 0;
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arg_cnt = 0;
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// Zero out digits
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for(int i = 0; i < CSI_N_MAX; i++) {
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arg[i] = 0;
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}
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{cs = 5;goto _again;}
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}
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break;
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case 3:
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/* #line 216 "user/ansi_parser.rl" */
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{
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leadchar = (*p);
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}
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break;
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case 4:
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/* #line 220 "user/ansi_parser.rl" */
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{
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if (arg_cnt == 0) arg_cnt = 1;
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// x10 + digit
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if (arg_ni < CSI_N_MAX) {
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arg[arg_ni] = arg[arg_ni]*10 + ((*p) - '0');
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}
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}
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break;
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case 5:
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/* #line 228 "user/ansi_parser.rl" */
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{
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if (arg_cnt == 0) arg_cnt = 1; // handle case when first arg is empty
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arg_cnt++;
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arg_ni++;
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}
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break;
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case 6:
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/* #line 234 "user/ansi_parser.rl" */
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{
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apars_handle_csi(leadchar, arg, arg_cnt, (*p));
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{cs = 1;goto _again;}
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}
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break;
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case 7:
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/* #line 245 "user/ansi_parser.rl" */
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{
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leadchar = (*p);
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str_ni = 0;
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string_buffer[0] = '\0';
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inside_string = true;
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{cs = 7;goto _again;}
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}
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break;
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case 8:
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/* #line 253 "user/ansi_parser.rl" */
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{
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string_buffer[str_ni++] = (*p);
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}
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break;
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case 9:
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/* #line 257 "user/ansi_parser.rl" */
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{
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inside_string = false;
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string_buffer[str_ni++] = '\0';
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apars_handle_string_cmd(leadchar, string_buffer);
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{cs = 1;goto _again;}
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}
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break;
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case 10:
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/* #line 270 "user/ansi_parser.rl" */
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{
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apars_handle_hash_cmd((*p));
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{cs = 1;goto _again;}
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}
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break;
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case 11:
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/* #line 275 "user/ansi_parser.rl" */
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{
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apars_handle_short_cmd((*p));
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{cs = 1;goto _again;}
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}
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break;
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case 12:
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/* #line 280 "user/ansi_parser.rl" */
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{
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apars_handle_space_cmd((*p));
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{cs = 1;goto _again;}
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}
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break;
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case 13:
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/* #line 287 "user/ansi_parser.rl" */
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{
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leadchar = (*p);
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{cs = 9;goto _again;}
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}
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break;
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case 14:
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/* #line 292 "user/ansi_parser.rl" */
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{
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apars_handle_chs_designate(leadchar, (*p));
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{cs = 1;goto _again;}
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}
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break;
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/* #line 510 "user/ansi_parser.c" */
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}
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}
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goto _again;
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_again:
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if ( cs == 0 )
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goto _out;
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if ( ++p != pe )
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goto _resume;
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_test_eof: {}
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if ( p == eof )
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{
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const char *__acts = _ansi_actions + _ansi_eof_actions[cs];
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unsigned int __nacts = (unsigned int) *__acts++;
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while ( __nacts-- > 0 ) {
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switch ( *__acts++ ) {
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case 0:
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/* #line 185 "user/ansi_parser.rl" */
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{
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ansi_warn("Parser error.");
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apars_show_context();
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inside_string = false; // no longer in string, for sure
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{cs = 1; if ( p == pe )
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goto _test_eof;
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goto _again;}
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}
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break;
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/* #line 538 "user/ansi_parser.c" */
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}
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}
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}
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_out: {}
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}
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/* #line 315 "user/ansi_parser.rl" */
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}
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