Work on documentation.

[rpatk.git] / rexcc / rexcc.c

diff --git a/rexcc/rexcc.c b/rexcc/rexcc.c
index 4eddb2d..0915ae1 100644 (file)
--- a/rexcc/rexcc.c
+++ b/rexcc/rexcc.c
@@ -41,6 +41,7 @@ struct tokeninfo_s {
 struct parseinfo_s {
        rbuffer_t id;
        rbuffer_t regex;
+       int line;
 };
 
 
@@ -152,6 +153,32 @@ int rex_cc_fprintf(FILE *out, int indent, const char *format, ...)
 }
 
 
+static void rex_cc_output_gpl(FILE *out)
+{
+       static char *gpl =
+                       "/*\n"
+                       " *  Regular Pattern Analyzer Toolkit(RPA/Tk)\n"
+                       " *  Copyright (c) 2009-2012 Martin Stoilov\n"
+                       " *\n"
+                       " *  This program is free software: you can redistribute it and/or modify\n"
+                       " *  it under the terms of the GNU General Public License as published by\n"
+                       " *  the Free Software Foundation, either version 3 of the License, or\n"
+                       " *  (at your option) any later version.\n"
+                       " *\n"
+                       " *  This program is distributed in the hope that it will be useful,\n"
+                       " *  but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+                       " *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
+                       " *  GNU General Public License for more details.\n"
+                       " *\n"
+                       " *  You should have received a copy of the GNU General Public License\n"
+                       " *  along with this program.  If not, see <http://www.gnu.org/licenses/>.\n"
+                       " *\n"
+                       " *  Martin Stoilov <martin@rpasearch.com>\n"
+                       " */\n";
+       rex_cc_fprintf(out, 0, "%s\n", gpl);
+}
+
+
 static int rex_cc_output_statesubstates(rexcc_t *pCC, FILE *out, long nstate)
 {
        long i;
@@ -294,8 +321,8 @@ static int rex_cc_output_dfa(rexcc_t *pCC, FILE *out)
 
 int rex_cc_output(rexcc_t *pCC, FILE *outc)
 {
-
        if (outc) {
+               rex_cc_output_gpl(outc);
                rex_cc_fprintf(outc, 0, "#include \"rexdfa.h\"\n\n");
                if (pCC->prolog.size) {
                        fwrite(pCC->prolog.s, 1, pCC->prolog.size, outc);
@@ -319,6 +346,18 @@ int rex_cc_output(rexcc_t *pCC, FILE *outc)
 }
 
 
+static int rex_cc_getlineno(rexcc_t *pCC, const char *input)
+{
+       int ret = 1;
+
+       while (--input >= pCC->start) {
+               if (*input == '\n')
+                       ret += 1;
+       }
+       return ret;
+}
+
+
 int rex_cc_gettoken(rexcc_t *pCC)
 {
        ruint32 wc = 0;
@@ -389,6 +428,7 @@ static int rex_cc_parseline(rexcc_t *pCC)
                /*
                 * Unexpected char.
                 */
+               fprintf(stdout, "Line %d, (%s) Unexpected Char.\n", rex_cc_getlineno(pCC, pCC->input), "Error");
                return -1;
        }
        if (rex_cc_parseregex(pCC, &info) < 0)
@@ -403,8 +443,9 @@ int rex_cc_parse(rexcc_t *pCC)
        pCC->prolog.s = pCC->input;
        pCC->prolog.size = 0;
        while (pCC->input + 3 < pCC->end) {
-               if (*pCC->input == '%' && *(pCC->input+1) == '%' && (*(pCC->input+2) == '\n' || (*(pCC->input+2) == '\r' && *(pCC->input+3) == '\n')))
+               if (*pCC->input == '%' && *(pCC->input+1) == '%' && (*(pCC->input+2) == '\n' || (*(pCC->input+2) == '\r' && *(pCC->input+3) == '\n'))) {
                        break;
+               }
                pCC->prolog.size += 1;
                pCC->input += 1;
        }
@@ -416,7 +457,8 @@ int rex_cc_parse(rexcc_t *pCC)
                if (pCC->token == REXCC_TOKEN_CR || pCC->token == REXCC_TOKEN_SPACE || pCC->token == REXCC_TOKEN_REGEX) {
                        rex_cc_gettoken(pCC);
                } else if (pCC->token == REXCC_TOKEN_IDENTIFIER) {
-                       rex_cc_parseline(pCC);
+                       if (rex_cc_parseline(pCC) < 0)
+                               return -1;
                } else if (pCC->token == REXCC_TOKEN_DELIMITER) {
                        rex_cc_gettoken(pCC);
                        return 0;
@@ -424,6 +466,7 @@ int rex_cc_parse(rexcc_t *pCC)
                        /*
                         * Unexpected char
                         */
+                       fprintf(stdout, "Line %d, (%s) Unexpected Char.\n", rex_cc_getlineno(pCC, pCC->input), "Error");
                        return -1;
                }
                pCC->epilog.s = pCC->input;
@@ -438,6 +481,7 @@ int rex_cc_load_buffer(rexcc_t *pCC, rbuffer_t *text)
        int ret = 0, i;
        struct parseinfo_s *pi;
 
+       pCC->start = text->s;
        pCC->input = text->s;
        pCC->end = text->s + text->size;
        r_array_setlength(pCC->parseinfo, 0);
@@ -445,6 +489,11 @@ int rex_cc_load_buffer(rexcc_t *pCC, rbuffer_t *text)
                for (i = 0; i < r_array_length(pCC->parseinfo); i++) {
                        pi = (struct parseinfo_s *)r_array_slot(pCC->parseinfo, i);
                        if (rex_cc_load_pattern(pCC, &pi->regex, i) < 0) {
+                               fprintf(stdout, "Line %d, (%s) Syntax error: ", rex_cc_getlineno(pCC, pi->id.s), "Error");
+                               fwrite(pi->id.s, 1, pi->id.size, stdout);
+                               fprintf(stdout, "  ");
+                               fwrite(pi->regex.s, 1, pi->regex.size, stdout);
+                               fprintf(stdout, "\n");
                                return -1;
                        }
 #if 0
@@ -457,3 +506,18 @@ int rex_cc_load_buffer(rexcc_t *pCC, rbuffer_t *text)
        }
        return ret;
 }
+
+
+void rex_cc_parseinfodump(rexcc_t *pCC)
+{
+       long i;
+       struct parseinfo_s *pi;
+
+       for (i = 0; i < r_array_length(pCC->parseinfo); i++) {
+               pi = (struct parseinfo_s *)r_array_slot(pCC->parseinfo, i);
+               fwrite(pi->id.s, 1, pi->id.size, stdout);
+               fprintf(stdout, "  ");
+               fwrite(pi->regex.s, 1, pi->regex.size, stdout);
+               fprintf(stdout, "\n");
+       }
+}