diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/flatten/flatten.l |
Initial commit
Diffstat (limited to 'support/flatten/flatten.l')
-rw-r--r-- | support/flatten/flatten.l | 837 |
1 files changed, 837 insertions, 0 deletions
diff --git a/support/flatten/flatten.l b/support/flatten/flatten.l new file mode 100644 index 0000000000..85ffee5c07 --- /dev/null +++ b/support/flatten/flatten.l @@ -0,0 +1,837 @@ +%{ +/* flatten.l (flex) lexer for concatenating "included" (La)TeX files + * Written by Peter Wilson (Catholic University and NIST) + * pwilson@cme.nist.gov + */ + +char FILE_VERSION[] = "Version 1.1"; +char FILE_DATE[] = "October 1995"; + +/* Version History: + * 1.0 (December 1994): First release + * 1.1 (October 1995): Added: + * -- directory searching + * -- use of \endinput to stop processing an included file + */ + +/* Development of this software was funded by the United States Government + * and is not subject to copyright. + */ + +/* National Institute of Standards and Technology (NIST) + * Manufacturing Engineering Laboratory (MEL) + * Manufacturing Systems Integration Division (MSID) + * ******************************************************************** + * D I S C L A I M E R + * + * There is no warranty for the FLaTTeN software. + * If the FLaTTeN software + * is modified by someone else and passed on, NIST wants + * the software's recipients to know that what they have is not what NIST + * distributed. + * + * Policies + * + * 1. Anyone may copy and distribute verbatim copies of the + * source code as received in any medium. + * + * 2. Anyone may modify your copy or copies of the FLaTTeN source + * code or any portion of it, and copy and distribute such modifications + * provided that all modifications are clearly associated with the entity + * that performs the modifications. + * + * NO WARRANTY + * =========== + * + * NIST PROVIDES ABSOLUTELY NO WARRANTY. THE FLaTTeN SOFTWARE + * IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS + * WITH YOU. SHOULD ANY PORTION OF THE FLaTTeN SOFTWARE PROVE DEFECTIVE, + * YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + * + * IN NO EVENT WILL NIST BE LIABLE FOR DAMAGES, + * INCLUDING ANY LOST PROFITS, LOST MONIES, OR OTHER SPECIAL, + * INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR + * INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA + * BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR A + * FAILURE OF THE PROGRAM TO OPERATE WITH PROGRAMS NOT DISTRIBUTED BY + * NIST) THE PROGRAMS, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. + */ + + +#include <stdio.h> +#include <string.h> +#include <ctype.h> +#include "getopt.h" +#include "srchenv.h" + +typedef char *STRING; /* a pointer-to-a-char */ +typedef STRING *PTRADR; /* A pointer-to-a-pointer-to-a-char */ + + +#ifndef TRUE +# define TRUE 1 +#endif +#ifndef FALSE +# define FALSE 0 +#endif +# define MAX_DEPTH 100 /* max file nesting depth */ +# define MAX_NAME 100 /* max length of a file name */ +# define MY_EOS '\0' +# define MAX_ERRORS 10 /* max number of errors */ + +FILE *filerr; /* error file */ +FILE *filout; /* output file */ +FILE *filin; /* input root file */ +int kind; /* kind of file inclusion */ +int depth = 0; /* depth of file nesting */ +FILE *file_stack[MAX_DEPTH]; /* stack of files */ +char *name_stack[MAX_DEPTH]; /* stack of file names */ +YY_BUFFER_STATE buffer_stack[MAX_DEPTH]; /* stack of input buffers */ +char filnam[MAX_NAME]; /* name of a file */ +char extnam[MAX_NAME]; /* name of file with extension */ + +extern FILE *yyin; +extern FILE *yyout; + +int DEBUG; /* >=1 for debugging */ +int num_errors = 0; /* number of errors */ +int lineno = 1; /* input file line number */ +# define MAX_LINE 2000 /* max length of an input line */ +char linebuf[MAX_LINE]; /* buffer for input line */ +int linlen = 0; /* current no of chars in linebuf */ + +char verb_char; /* delimeter for \verb command */ + +FILE *filtabin; /* command input file */ +int num_commands = 0; /* number of types of include commands */ +# define MAX_TABLE_LINE 100 /* max number of chars in command table line */ +# define MAX_COMMANDS 100 /* max number of inclusion commands */ +STRING ctable[MAX_COMMANDS]; /* include command name table */ + +int lex_result; /* scratch integer for lexer */ + + /* Environment variable defined search path stuff */ +char path_name[257]; /* name of a path */ +char sys_envname[20]; /* name of environment variable */ +char path_sep[10]; /* path name seperators */ +char dir_cat; /* directory catenation char */ +int senv_debug; /* =1 for debug searchenv() */ + +void packup(); +char *strsave(); +void yyerror(); +void start_a_file(); +void end_a_file(); +void catl(); +void warning(); +void read_table(); +int lookup(); +void initialise_senv(); + +%} + /* END OF C CODE TO BE COPIED TO OUTPUT */ + + /* TeX comments from % through eol and gobble following whitespace */ +tex_comment (%.*\n[ \t]*) +verbatim (verbatim\*?) +verb (\\verb\*?) +ws ([ \t]) +whitespace ([ \t]*) +lbrace ([ \t]*\{[ \t]*) +rbrace ([ \t]*\}[ \t]*) +include (\\include) +input (\\input) +infile (\\infile) +endinput (\\endinput) +fname ([^\{\}]+) +newline (\n) +alpha ([a-zA-Z]+) + +backslash (\\) +begin_c (\\begin) +end_c (\\end) +command (\\[a-zA-Z]+) + +%x VERBATIM_STATE +%x VERB_STATE +%x IN_STATE + + /* END OF DEFINITIONS SECTION */ +%% + /* START OF RULES SECTION */ + + /*--------------- expressions and actions -------------------*/ + + /* TeX comment */ +{tex_comment} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + lineno++; + linebuf[0] = MY_EOS; + linlen = 0; + fprintf(filout, "%s", yytext); + } + + /* verbatims */ + /* \begin{verbatim} */ +{begin_c}{lbrace}{verbatim}{rbrace} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + BEGIN VERBATIM_STATE; + fprintf(filout, "%s", yytext); + } + /* newline in verbatim */ +<VERBATIM_STATE>{newline} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + lineno++; + linebuf[0] = MY_EOS; + linlen = 0; + fprintf(filout, "%s", yytext); + } + /* backslash in verbatim */ +<VERBATIM_STATE>{backslash} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + fprintf(filout, "%s", yytext); + } + /* all except backslash and newline */ +<VERBATIM_STATE>[^\n\\]+ { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + fprintf(filout, "%s", yytext); + } + /* \end{verbatim} */ +<VERBATIM_STATE>{end_c}{lbrace}{verbatim}{rbrace} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + BEGIN 0; + fprintf(filout, "%s", yytext); + } + + /* \verb (and its trailing char) */ +{verb}. { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + BEGIN VERB_STATE; + fprintf(filout, "%s", yytext); + verb_char = yytext[yyleng - 1]; + } + /* newline inside \verb */ +<VERB_STATE>{newline} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + lineno++; + linebuf[0] = MY_EOS; + linlen = 0; + fprintf(filout, "%s", yytext); + } + /* chars inside \verb */ +<VERB_STATE>. { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + if (verb_char == yytext[0]) { + BEGIN 0; + } + fprintf(filout, "%s", yytext); + } + + /*-------- endinput command ------*/ + +{endinput} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "\nlex DEBUG: End of input %s\n", name_stack[depth]); + fflush(filerr); + } + if (depth > 0) { + end_a_file(); + yy_switch_to_buffer(buffer_stack[depth]); + } + else { + return(EOF); + } + } + + /*--------- includes? -------------*/ + +{command} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + lex_result = lookup(yytext); + if (DEBUG) { + fprintf(filerr, " (lookup=%d) ", lex_result); + fflush(filerr); + } + if (lex_result >= 0) { /* found an include */ + fprintf(filout, "%%%s", yytext); + BEGIN IN_STATE; + } + else { + fprintf(filout, "%s", yytext); + } + } + + /* left brace */ +<IN_STATE>{lbrace} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + fprintf(filout, "%s", yytext); + } + + + /* file name */ +<IN_STATE>{fname} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + strcpy(filnam, yytext); + fprintf(filout, "%s", yytext); + } + + /* close brace */ +<IN_STATE>{rbrace} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + fprintf(filout, "%s\n", yytext); + start_a_file(filnam); + yy_switch_to_buffer(buffer_stack[depth]); + if (DEBUG) { + fprintf(filerr, "\nlex DEBUG: Start of file: %s\n", name_stack[depth]); + fflush(filerr); + } + BEGIN 0; + } + + /*------------- uninteresting stuff -----------------*/ + + /* newline */ +{newline} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + lineno++; + linebuf[0] = MY_EOS; + linlen = 0; + fprintf(filout, "%s", yytext); + } + + /* alphabetic string */ +{alpha} { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + fprintf(filout, "%s", yytext); + } + + /* End Of File */ +<<EOF>> { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "\nlex DEBUG: End of file %s\n", name_stack[depth]); + fflush(filerr); + } + if (depth > 0) { + end_a_file(); + yy_switch_to_buffer(buffer_stack[depth]); + } + else { + return(EOF); + } + } + + /* anything else */ +. { catl(yyleng, yytext); + if (DEBUG) { + fprintf(filerr, "%s", yytext); + fflush(filerr); + } + fprintf(filout, "%s", yytext); + } + + /* END OF RULES SECTION */ +%% + /* START OF USER SUBROUTINE SECTION */ + + +/* MAIN program */ +main(argc, argv) +int argc; +char **argv; +{ + char optchar; + int n; + FILE *file; + int result; + int i, j; + char tabnam[100]; /* command table input file */ + int TABLE = FALSE; + + /* print banner */ + fprintf(stdout, "\n flatten: Source file inclusion for LaTeX files"); + fprintf(stdout, "\n (%s, %s)\n", FILE_VERSION, FILE_DATE); + + + /* open error log file */ + file = fopen("flatten.err", "w"); + if (!file) { + fprintf(stderr, "\n Could not open file flatten.err\n"); + exit(1); + } + filerr = file; + fprintf(stdout, "\nError file is flatten.err\n"); + fprintf(filerr, "Error file for program flatten (%s, %s)\n", + FILE_VERSION, FILE_DATE); + fprintf(filerr, "Author: Peter Wilson (Catholic University and NIST)\n"); + fprintf(filerr, "Email any comments or suggestions to pwilson@cme.nist.gov\n\n"); + + /* set up for directory searching */ + initialise_senv(); + + /* get command line optional parameters */ + opterr = 1; /* getopt will print errors with opterr = 1 */ + while (EOF != (optchar = + getopt(argc,argv,"d:f:P:D:"))) { + switch(optchar) { + case '?': { /* command line error */ + fprintf(stdout,"\nUsage [-d number] [-f tablename] [-P chars] [-D char] infile outfile\n"); + fprintf(filerr,"\nUsage [-d number] [-f tablename] [-P chars] [-D char] infile outfile\n"); + break; + } + case 'd': { /* switch on debugging */ + senv_debug = atoi(optarg); + if (senv_debug > 1) { /* debug everything */ + DEBUG = 1; + senv_debug = 1; + fprintf(stdout, "All debugging set ON\n"); + fprintf(filerr, "All debugging set ON\n"); + } + else if (senv_debug = 1) { /* debug directory search only */ + fprintf(stdout, "Directory search debugging set ON\n"); + fprintf(filerr, "Directory search debugging set ON\n"); + } + else { /* an error */ + senv_debug = 0; + fprintf(stdout, "Debug option error. Requires number greater than zero\n"); + fprintf(filerr, "Debug option error. Requires number greater than zero\n"); + } + break; + } + case 'f': { /* commands in a file */ + TABLE = TRUE; + strcpy(tabnam, optarg); + break; + } + case 'P': { /* pathname seperators */ + strcpy(path_sep, optarg); + strcat(path_sep, " "); + fprintf(stdout,"Pathname seperators set to (%s)\n", path_sep); + fprintf(filerr,"Pathname seperators set to (%s)\n", path_sep); + break; + } + case 'D': { /* directory catenation char */ + dir_cat = optarg[0]; + fprintf(stdout,"Directory catenation character set to %c\n", dir_cat); + fprintf(filerr,"Directory catenation character set to %c\n", dir_cat); + break; + } + } + } /* end of optional parameter processing */ + + if (TABLE) { /* open table file */ + if (!searchenv(tabnam, sys_envname, path_name, path_sep, dir_cat, senv_debug)) { + fprintf(stderr,"Fatal error: Could not find file %s\n", tabnam); + exit(1); + } + file = fopen(path_name, "r"); + if (!file) { + fprintf(stderr, "Fatal error: Could not open file %s\n", path_name); + exit(1); + } + filtabin = file; + fprintf(stdout, "Command input file is %s\n", path_name); + fprintf(filerr, "Command input file is %s\n", path_name); + } + else { + fprintf(stdout, "Using default inclusion commands\n"); + fprintf(filerr, "Using default inclusion commands\n"); + } + + /* rest of parameters are file names (input and output) */ + n = 0; + for (;optind < argc; optind++) { + n++; + if (n == 1) { + strcpy(filnam, argv[optind]); /* take copy of input file name */ + file = fopen(argv[optind], "r"); + if (!file) { + fprintf(stderr,"\nCould not open input file %s\n",argv[optind]); + fprintf(filerr,"\nCould not open input file %s\n",argv[optind]); + exit(1); + } + fprintf(stdout,"\nReading file %s", argv[optind]); + fprintf(filerr,"\nReading file %s", argv[optind]); + filin = file; + } + else { + if (n == 2) { + file = fopen(argv[optind], "w"); + if (!file) { + fprintf(stderr,"\nCould not open output file %s\n",argv[optind]); + fprintf(filerr,"\nCould not open output file %s\n",argv[optind]); + exit(1); + } + fprintf(stdout," and writing to file %s\n",argv[optind]); + fprintf(filerr," and writing to file %s\n",argv[optind]); + filout = file; + } + else { + fprintf(stderr,"\nOnly two files permitted. File %s ignored\n",argv[optind]); + fprintf(filerr,"\nOnly two files permitted. File %s ignored\n",argv[optind]); + } + } + } + if (n == 0) { + fprintf(stderr,"\nAn input and an output file are required.\n"); + fprintf(filerr,"\nAn input and an output file are required.\n"); + exit(1); + } + /* initialize file stacks */ + file_stack[0] = filin; + if (DEBUG) { + fprintf(stderr, "\n DEBUG: Source filnam = %s", filnam); + fprintf(filerr, "\n DEBUG: Source filnam = %s", filnam); + fflush(filerr); + } + name_stack[0] = strsave(filnam); + buffer_stack[0] = yy_create_buffer(filin, YY_BUF_SIZE); +/* strcpy(name_stack[0], filnam); */ + if (DEBUG) { + fprintf(stderr, "\n DEBUG: filnam = %s", filnam); + fprintf(stderr, "\n name_stack[0] = %s", name_stack[0]); + fprintf(filerr, "\n DEBUG: filnam = %s", filnam); + fprintf(filerr, "\n name_stack[0] = %s", name_stack[0]); + fflush(filerr); + } + for (i = 1; i < MAX_DEPTH; i++) { + file_stack[i] = NULL; + name_stack[i] = NULL; + } + + /* set up command table */ + if (TABLE) { /* read commands */ + read_table(); + } + else { /* use default commands */ + ctable[0] = "\\input"; + ctable[1] = "\\include"; + num_commands = 2; + } + if (DEBUG) { /* print table */ + fprintf(filerr, "\n COMMAND TABLE (%d commands)\n", num_commands); + for (j = 0; j < num_commands; j++) { + fprintf(filerr, "(%d) %s\n", j, ctable[j]); + } + fflush(filerr); + } + + /* process input */ + /* fprintf(filout, "File %s incorporates the following files:\n", name_stack[0]); */ + fprintf(filerr, "\nProcessing root source file %s", name_stack[depth]); + fprintf(stdout, "\nProcessing root source file %s", name_stack[depth]); + fflush(filerr); + + for (;;) { + /* yyin = file_stack[depth]; */ + if (file_stack[depth] == NULL) { + yyerror("FATAL ERROR: Null file name"); + exit(1); + } + yy_switch_to_buffer(buffer_stack[depth]); + result = yylex(); + if (DEBUG) { + fprintf(stderr, "\n DEBUG: Parse returned with result = %d",result); + fprintf(filerr, "\n DEBUG: Parse returned with result = %d",result); + fflush(filerr); + } + if (result == EOF) { /* end of current file */ + if (depth <= 0) { /* end of all files */ + fprintf(stdout, "\nEnd of root input file %s\n", name_stack[0]); + fprintf(filerr, "\nEnd of root input file %s\n", name_stack[0]); + fprintf(stdout, "\nCompleted file processing\n"); + fprintf(filerr, "\nCompleted file processing\n"); + packup(filin, filout, filerr); + return(0); + } + else { /* pop stacks */ + end_a_file(); + } + } + else { /* new file inclusion */ + start_a_file(filnam); + } + } /* end for loop */ +} /* end MAIN */ + + +/* ADDEXT adds a .tex extension to a file name */ +int addext(in, out) +char in[]; /* name as input */ +char out[]; /* name with .tex extension */ +{ + int i, n; + int period; + + period = FALSE; + for (i = 0; in[i] != MY_EOS; i++) { + out[i] = in[i]; + if (in[i] == '.') { + period = TRUE; + } + } + out[i] = MY_EOS; + if (period == FALSE) { + strcat(out, ".tex"); + } + return(period); +} /* end ADDEXT */ + +/* PACKUP closes 3 files */ +void packup(f1, f2, f3) +FILE *f1; +FILE *f2; +FILE *f3; +{ + fclose(f1); + fclose(f2); + fclose(f3); +} /* end PACKUP */ + + +/* STRSAVE saves a string somewhere */ +char *strsave(s) +char *s; /* string to be saved */ +{ + char *p, *malloc(); + + if ((p = malloc(strlen(s)+1)) != NULL) { + strcpy(p, s); + return(p); + } + else { + fprintf(stderr, "\nFATAL ERROR: Out of memory in STRSAVE\n"); + fprintf(filerr, "\nFATAL ERROR: Out of memory in STRSAVE\n"); + exit(1); + } +} /* end STRSAVE */ + + +/* YYERROR prints parse error message */ +void yyerror(s) +char *s; /* string to be printed */ +{ + fprintf(stderr, "\n%s in line\n%d: %s\n", s, lineno, linebuf); + fprintf(filerr, "\n%s in line\n%d: %s\n", s, lineno, linebuf); + num_errors++; + if (num_errors >= MAX_ERRORS) { + fprintf(stderr, "\n** Program ended with at least %d errors **\n", num_errors); + fprintf(filerr, "\n** Program ended with at least %d errors **\n", num_errors); + fprintf(yyout, "\n** Program ended with at least %d errors **\n", num_errors); + exit(1); + } +} /* end YYERROR */ + + +/* START_A_FILE starts a new input file */ +void start_a_file(filnam) +char filnam[]; /* name of file */ +{ + char extnam[MAX_NAME]; + FILE *file; + int i; + + addext(filnam, extnam); /* add extension to file name */ + if (depth >= MAX_DEPTH - 1) { + fprintf(stderr, "\n File nesting too deep (over %d)\n", MAX_DEPTH); + fprintf(filerr, "\n File nesting too deep (over %d)\n", MAX_DEPTH); + fflush(filerr); + packup(filin, filout, filerr); + exit(0); + } + if (!searchenv(extnam, sys_envname, path_name, path_sep, dir_cat, senv_debug)) { + fprintf(stderr,"\nCould not find file %s\n", extnam); + fprintf(filerr,"\nCould not find file %s\n", extnam); + fflush(filerr); + fprintf(filout, "\n%%FLATTEN WARNING: Could not find file %s\n", extnam); + fprintf(filout, "%% Skipping it\n"); + return; + } + file = fopen(path_name, "r"); + if (!file) { + fprintf(stderr, "\n Could not open file %s\n", path_name); + fprintf(filerr, "\n Could not open file %s\n", path_name); + fflush(filerr); + fprintf(filout, "\n%%FLATTEN WARNING: Could not open file %s\n", path_name); + fprintf(filout, "%% Skipping it\n"); + return; + } + depth++; + name_stack[depth] = strsave(path_name); + file_stack[depth] = file; + buffer_stack[depth] = yy_create_buffer(file, YY_BUF_SIZE); + if (DEBUG) { + fprintf(filerr, "\n DEBUG (start_a_file): depth = %d", depth); + fflush(filerr); + for (i = 0; i <= depth; i++) { + fprintf(filerr, "\n depth = %d, name_stack = %s", i, name_stack[i]); + } + fprintf(filerr, "\n DEBUG (start_a_file): New file is %s", name_stack[depth]); + fprintf(stdout, "\n DEBUG (start_a_file): New file is %s", name_stack[depth]); + fflush(filerr); + } + + fprintf(stdout, "\nProcessing file %s as %s", filnam, name_stack[depth]); + fprintf(filerr, "\nProcessing file %s as %s", filnam, name_stack[depth]); + fflush(filerr); + +} /* end START_A_FILE */ + + +/* END_A_FILE closes down a file */ +void end_a_file() +{ + int i; + + fprintf(filout, "%% END OF FILE %s\n", name_stack[depth]); + fprintf(stdout, "\n End of file %s", name_stack[depth]); + fprintf(filerr, "\n End of file %s", name_stack[depth]); + fflush(filerr); + if (DEBUG) { + fprintf(filerr, "\n DEBUG (end_a_file): depth = %d", depth); + for (i = 0; i <= depth; i++) { + fprintf(filerr, "\n depth = %d, name_stack = %s", i, name_stack[i]); + fflush(filerr); + } + fprintf(filerr, "\n DEBUG (end_a_file): Old file was %s", name_stack[depth]); + fprintf(stdout, "\n DEBUG (end_a_file): Old file was %s", name_stack[depth]); + fflush(filerr); + } + + /* pop stack */ + fclose(file_stack[depth]); + file_stack[depth] = NULL; + free(name_stack[depth]); + name_stack[depth] = NULL; + yy_delete_buffer(buffer_stack[depth]); + depth--; + if (depth < 0) { + yyerror("Nesting depth gone negative"); + depth = 0; + } +} /* end END_A_FILE */ + + +/* WARNING prints a warning */ +void warning(s) +char *s; +{ + fprintf(stderr, "\nWARNING: %s in line\n%d: %s\n", s, lineno, linebuf); + fprintf(filerr, "\nWARNING: %s in line\n%d: %s\n", s, lineno, linebuf); + fflush(filerr); +} /* end WARNING */ + + +/* CATL concatenates S to line buffer */ +void catl(n,s) +int n; /* no of chars in s */ +char *s; +{ + linlen = linlen + n; /* current no. of chars to be in linebuf */ + if (linlen >= MAX_LINE) { /* linebuf will overflow */ + warning("A very long line. Internal buffer size exceeded"); + linebuf[0] = '\0'; + linlen = n; + } + strcat(linebuf, s); +} /* end CATL */ + + +/* READ_TABLE sets up commands from filtabin */ +void read_table() +{ + char line[MAX_TABLE_LINE]; + char code_name[MAX_TABLE_LINE]; + int num_names; + + while ( fgets(line, MAX_TABLE_LINE, filtabin) != NULL) { /* read a line */ + /* get first name on line */ + num_names = sscanf(line, "%s", code_name); + if (num_names == 0) { /* ignore blank line */ + ; + } + else { /* add to table */ + if (num_commands >= MAX_COMMANDS) { /* overflow */ + fprintf(stderr, "\nWARNING Too many commands, limited to %d\n", MAX_COMMANDS); + fprintf(filerr, "\nWARNING Too many commands, limited to %d\n", MAX_COMMANDS); + fflush(filerr); + return; + } + ctable[num_commands] = strsave(code_name); + num_commands++; + } + } +} /* end READ_TABLE */ + + +/* LOOKUP searches for str in ctable */ +int lookup(str) +char str[]; +{ + int i; + + for (i = 0; i < num_commands; i++) { + if (strcmp(ctable[i], str) == 0) { /* found it */ + return(i); + } + } + return(-1); +} /* end LOOKUP */ + + +/* INITIALISE_SENV initialises path searching */ +void initialise_senv() +{ + strcpy(sys_envname,"FLATINPUTS"); /* the environment variable name */ + strcpy(path_sep," :;"); /* path seperators */ + dir_cat = '/'; /* directory catenation char */ + senv_debug = 0; /* debugging off */ +} /* end INITIALISE_SENV */
\ No newline at end of file |