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authorKarl Berry <karl@freefriends.org>2019-01-06 23:19:16 +0000
committerKarl Berry <karl@freefriends.org>2019-01-06 23:19:16 +0000
commit976f2b9b61a086f8594f6bfe6dbea42faa56edb2 (patch)
tree9e620153df80a27b0304ae9827fa0f69a02191e0 /Build/source/texk/web2c/cwebdir/comm-w2c.h
parentb109e3c47399f4fdfc7805b8f9168c7452f78e96 (diff)
cwebbin for cweb, from Andreas Scherer https://github.com/ascherer/cwebbin)
git-svn-id: svn://tug.org/texlive/trunk@49626 c570f23f-e606-0410-a88d-b1316a301751
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diff --git a/Build/source/texk/web2c/cwebdir/comm-w2c.h b/Build/source/texk/web2c/cwebdir/comm-w2c.h
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+% This file is part of CWEB.
+% This program by Silvio Levy and Donald E. Knuth
+% is based on a program by Knuth.
+% It is distributed WITHOUT ANY WARRANTY, express or implied.
+% Version 3.64 --- February 2017 (works also with later versions)
+
+% Copyright (C) 1987,1990,1993 Silvio Levy and Donald E. Knuth
+
+% Permission is granted to make and distribute verbatim copies of this
+% document provided that the copyright notice and this permission notice
+% are preserved on all copies.
+
+% Permission is granted to copy and distribute modified versions of this
+% document under the conditions for verbatim copying, provided that the
+% entire resulting derived work is distributed under the terms of a
+% permission notice identical to this one.
+
+% Amendments to 'common.h' resulting in this extended 'comm-foo.h' were
+% created by numerous collaborators over the course of many years.
+
+% Please send comments, suggestions, etc. to tex-k@@tug.org.
+
+% The next few sections contain stuff from the file |"common.w"| that has
+% to be included in both |"ctangle.w"| and |"cweave.w"|. It appears in this
+% file |"common.h"|, which needs to be updated when |"common.w"| changes.
+
+First comes general stuff:
+
+@d ctangle 0
+@d cweave 1
+@d ctwill 2
+
+@s boolean int
+@s uint8_t int
+@s uint16_t int
+
+@<Common code for \.{CWEAVE} and \.{CTANGLE}@>=
+typedef bool boolean;
+typedef uint8_t eight_bits;
+typedef uint16_t sixteen_bits;
+extern int program; /* \.{CWEAVE} or \.{CTANGLE} or \.{CTWILL}? */
+extern int phase; /* which phase are we in? */
+
+@ @<Include files@>=
+#ifndef HAVE_GETTEXT
+#define HAVE_GETTEXT 0
+#endif
+@#
+#if HAVE_GETTEXT
+#include <libintl.h>
+#else
+#define gettext(A) A
+#endif
+@#
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+
+@ Code related to the character set:
+@^ASCII code dependencies@>
+
+@d and_and 04 /* `\.{\&\&}'\,; corresponds to MIT's {\tentex\char'4} */
+@d lt_lt 020 /* `\.{<<}'\,; corresponds to MIT's {\tentex\char'20} */
+@d gt_gt 021 /* `\.{>>}'\,; corresponds to MIT's {\tentex\char'21} */
+@d plus_plus 013 /* `\.{++}'\,; corresponds to MIT's {\tentex\char'13} */
+@d minus_minus 01 /* `\.{--}'\,; corresponds to MIT's {\tentex\char'1} */
+@d minus_gt 031 /* `\.{->}'\,; corresponds to MIT's {\tentex\char'31} */
+@d non_eq 032 /* `\.{!=}'\,; corresponds to MIT's {\tentex\char'32} */
+@d lt_eq 034 /* `\.{<=}'\,; corresponds to MIT's {\tentex\char'34} */
+@d gt_eq 035 /* `\.{>=}'\,; corresponds to MIT's {\tentex\char'35} */
+@d eq_eq 036 /* `\.{==}'\,; corresponds to MIT's {\tentex\char'36} */
+@d or_or 037 /* `\.{\v\v}'\,; corresponds to MIT's {\tentex\char'37} */
+@d dot_dot_dot 016 /* `\.{...}'\,; corresponds to MIT's {\tentex\char'16} */
+@d colon_colon 06 /* `\.{::}'\,; corresponds to MIT's {\tentex\char'6} */
+@d period_ast 026 /* `\.{.*}'\,; corresponds to MIT's {\tentex\char'26} */
+@d minus_gt_ast 027 /* `\.{->*}'\,; corresponds to MIT's {\tentex\char'27} */
+
+@<Common code...@>=
+char section_text[longest_name+1]; /* name being sought for */
+char *section_text_end = section_text+longest_name; /* end of |section_text| */
+char *id_first; /* where the current identifier begins in the buffer */
+char *id_loc; /* just after the current identifier in the buffer */
+
+@ Code related to input routines:
+
+@d xisalpha(c) (isalpha((eight_bits)c)&&((eight_bits)c<0200))
+@d xisdigit(c) (isdigit((eight_bits)c)&&((eight_bits)c<0200))
+@d xisspace(c) (isspace((eight_bits)c)&&((eight_bits)c<0200))
+@d xislower(c) (islower((eight_bits)c)&&((eight_bits)c<0200))
+@d xisupper(c) (isupper((eight_bits)c)&&((eight_bits)c<0200))
+@d xisxdigit(c) (isxdigit((eight_bits)c)&&((eight_bits)c<0200))
+
+@<Common code...@>=
+extern char buffer[]; /* where each line of input goes */
+extern char *buffer_end; /* end of |buffer| */
+extern char *loc; /* points to the next character to be read from the buffer*/
+extern char *limit; /* points to the last character in the buffer */
+
+@ Code related to identifier and section name storage:
+@d length(c) (size_t)((c+1)->byte_start-(c)->byte_start) /* the length of a name */
+@d print_id(c) term_write((c)->byte_start,length((c))) /* print identifier */
+@d llink link /* left link in binary search tree for section names */
+@d rlink dummy.Rlink /* right link in binary search tree for section names */
+@d root name_dir->rlink /* the root of the binary search tree
+ for section names */
+@d chunk_marker 0
+
+@<Common code...@>=
+typedef struct name_info {
+ char *byte_start; /* beginning of the name in |byte_mem| */
+ struct name_info *link;
+ union {
+ struct name_info *Rlink; /* right link in binary search tree for section
+ names */
+ char Ilk; /* used by identifiers in \.{CWEAVE} only */
+ } dummy;
+ void *equiv_or_xref; /* info corresponding to names */
+} name_info; /* contains information about an identifier or section name */
+typedef name_info *name_pointer; /* pointer into array of \&{name\_info}s */
+typedef name_pointer *hash_pointer;
+extern char byte_mem[]; /* characters of names */
+extern char *byte_mem_end; /* end of |byte_mem| */
+extern name_info name_dir[]; /* information about names */
+extern name_pointer name_dir_end; /* end of |name_dir| */
+extern name_pointer name_ptr; /* first unused position in |name_dir| */
+extern char *byte_ptr; /* first unused position in |byte_mem| */
+extern name_pointer hash[]; /* heads of hash lists */
+extern hash_pointer hash_end; /* end of |hash| */
+extern hash_pointer h; /* index into hash-head array */
+extern boolean names_match(name_pointer,const char *,size_t,eight_bits);@/
+extern name_pointer id_lookup(const char *,const char *,char);
+ /* looks up a string in the identifier table */
+extern name_pointer section_lookup(char *,char *,int); /* finds section name */
+extern void init_node(name_pointer);@/
+extern void init_p(name_pointer,eight_bits);@/
+extern void print_prefix_name(name_pointer);@/
+extern void print_section_name(name_pointer);@/
+extern void sprint_section_name(char *,name_pointer);@/
+
+@ Code related to error handling:
+@d spotless 0 /* |history| value for normal jobs */
+@d harmless_message 1 /* |history| value when non-serious info was printed */
+@d error_message 2 /* |history| value when an error was noted */
+@d fatal_message 3 /* |history| value when we had to stop prematurely */
+@d mark_harmless {if (history==spotless) history=harmless_message;}
+@d mark_error history=error_message
+@d _(STRING) gettext(STRING)
+@d confusion(s) fatal(_("! This can't happen: "),s)
+
+@<Common...@>=
+extern int history; /* indicates how bad this run was */
+extern int wrap_up(void); /* indicate |history| and exit */
+extern void err_print(const char *); /* print error message and context */
+extern void fatal(const char *,const char *); /* issue error message and die */
+extern void overflow(const char *); /* succumb because a table has overflowed */
+
+@ Code related to file handling:
+@f line x /* make |line| an unreserved word */
+@d max_file_name_length 1024
+@d cur_file file[include_depth] /* current file */
+@d cur_file_name file_name[include_depth] /* current file name */
+@d web_file_name file_name[0] /* main source file name */
+@d cur_line line[include_depth] /* number of current line in current file */
+
+@<Common code...@>=
+extern int include_depth; /* current level of nesting */
+extern FILE *file[]; /* stack of non-change files */
+extern FILE *change_file; /* change file */
+extern char C_file_name[]; /* name of |C_file| */
+extern char tex_file_name[]; /* name of |tex_file| */
+extern char idx_file_name[]; /* name of |idx_file| */
+extern char scn_file_name[]; /* name of |scn_file| */
+extern char check_file_name[]; /* name of |check_file| */
+extern char file_name[][max_file_name_length];
+ /* stack of non-change file names */
+extern char change_file_name[]; /* name of change file */
+extern int line[]; /* number of current line in the stacked files */
+extern int change_line; /* number of current line in change file */
+extern int change_depth; /* where \.{@@y} originated during a change */
+extern boolean input_has_ended; /* if there is no more input */
+extern boolean changing; /* if the current line is from |change_file| */
+extern boolean web_file_open; /* if the web file is being read */
+extern boolean get_line(void); /* inputs the next line */
+extern void check_complete(void); /* checks that all changes were picked up */
+extern void reset_input(void); /* initialize to read the web file and change file */
+
+@ Code related to section numbers:
+@<Common code...@>=
+extern sixteen_bits section_count; /* the current section number */
+extern boolean changed_section[]; /* is the section changed? */
+extern boolean change_pending; /* is a decision about change still unclear? */
+extern boolean print_where; /* tells \.{CTANGLE} to print line and file info */
+
+@ Code related to command line arguments:
+@d show_banner flags['b'] /* should the banner line be printed? */
+@d show_progress flags['p'] /* should progress reports be printed? */
+@d show_happiness flags['h'] /* should lack of errors be announced? */
+@d make_xrefs flags['x'] /* should cross references be output? */
+
+@<Common code...@>=
+extern int argc; /* copy of |ac| parameter to |main| */
+extern char **argv; /* copy of |av| parameter to |main| */
+extern boolean flags[]; /* an option for each 7-bit code */
+
+@ Code relating to output:
+@d update_terminal fflush(stdout) /* empty the terminal output buffer */
+@d new_line putchar('\n') @d putxchar putchar
+@d term_write(a,b) fflush(stdout),fwrite(a,sizeof(char),b,stdout)
+@d C_printf(c,a) fprintf(C_file,c,a)
+@d C_putc(c) putc(c,C_file)
+
+@<Common code...@>=
+extern FILE *C_file; /* where output of \.{CTANGLE} goes */
+extern FILE *tex_file; /* where output of \.{CWEAVE} goes */
+extern FILE *idx_file; /* where index from \.{CWEAVE} goes */
+extern FILE *scn_file; /* where list of sections from \.{CWEAVE} goes */
+extern FILE *check_file; /* temporary output file */
+extern FILE *active_file; /* currently active file for \.{CWEAVE} output */
+
+@ The procedure that gets everything rolling:
+
+@<Common code...@>=
+extern void common_init(void);@/
+extern void print_stats(void);@/
+extern void cb_show_banner(void);@/