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-rw-r--r--src/preproc/refer/command.cpp814
1 files changed, 814 insertions, 0 deletions
diff --git a/src/preproc/refer/command.cpp b/src/preproc/refer/command.cpp
new file mode 100644
index 0000000..b49e2be
--- /dev/null
+++ b/src/preproc/refer/command.cpp
@@ -0,0 +1,814 @@
+/* Copyright (C) 1989-2020 Free Software Foundation, Inc.
+ Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "refer.h"
+#include "refid.h"
+#include "search.h"
+#include "command.h"
+
+cset cs_field_name = csalpha;
+
+class input_item {
+ input_item *next;
+ char *filename;
+ int first_lineno;
+ string buffer;
+ const char *ptr;
+ const char *end;
+public:
+ input_item(string &, const char *, int = 1);
+ ~input_item();
+ int get_char();
+ int peek_char();
+ void skip_char();
+ void get_location(const char **, int *);
+
+ friend class input_stack;
+};
+
+input_item::input_item(string &s, const char *fn, int ln)
+: filename(strsave(fn)), first_lineno(ln)
+{
+ buffer.move(s);
+ ptr = buffer.contents();
+ end = ptr + buffer.length();
+}
+
+input_item::~input_item()
+{
+ delete[] filename;
+}
+
+inline int input_item::peek_char()
+{
+ if (ptr >= end)
+ return EOF;
+ else
+ return (unsigned char)*ptr;
+}
+
+inline int input_item::get_char()
+{
+ if (ptr >= end)
+ return EOF;
+ else
+ return (unsigned char)*ptr++;
+}
+
+inline void input_item::skip_char()
+{
+ ptr++;
+}
+
+void input_item::get_location(const char **filenamep, int *linenop)
+{
+ *filenamep = filename;
+ if (ptr == buffer.contents())
+ *linenop = first_lineno;
+ else {
+ int ln = first_lineno;
+ const char *e = ptr - 1;
+ for (const char *p = buffer.contents(); p < e; p++)
+ if (*p == '\n')
+ ln++;
+ ln--; // Back up to identify line number _before_ last seen newline.
+ *linenop = ln;
+ }
+ return;
+}
+
+class input_stack {
+ static input_item *top;
+public:
+ static void init();
+ static int get_char();
+ static int peek_char();
+ static void skip_char() { top->skip_char(); }
+ static void push_file(const char *);
+ static void push_string(string &, const char *, int);
+ static void error(const char *format,
+ const errarg &arg1 = empty_errarg,
+ const errarg &arg2 = empty_errarg,
+ const errarg &arg3 = empty_errarg);
+};
+
+input_item *input_stack::top = 0;
+
+void input_stack::init()
+{
+ while (top) {
+ input_item *tem = top;
+ top = top->next;
+ delete tem;
+ }
+}
+
+int input_stack::get_char()
+{
+ while (top) {
+ int c = top->get_char();
+ if (c >= 0)
+ return c;
+ input_item *tem = top;
+ top = top->next;
+ delete tem;
+ }
+ return -1;
+}
+
+int input_stack::peek_char()
+{
+ while (top) {
+ int c = top->peek_char();
+ if (c >= 0)
+ return c;
+ input_item *tem = top;
+ top = top->next;
+ delete tem;
+ }
+ return -1;
+}
+
+void input_stack::push_file(const char *fn)
+{
+ FILE *fp;
+ if (strcmp(fn, "-") == 0) {
+ fp = stdin;
+ fn = "<standard input>";
+ }
+ else {
+ errno = 0;
+ fp = fopen(fn, "r");
+ if (fp == 0) {
+ error("can't open '%1': %2", fn, strerror(errno));
+ return;
+ }
+ }
+ string buf;
+ bool is_at_beginning_of_line = true;
+ int lineno = 1;
+ for (;;) {
+ int c = getc(fp);
+ if (is_at_beginning_of_line && c == '.') {
+ // replace lines beginning with .R1 or .R2 with a blank line
+ c = getc(fp);
+ if (c == 'R') {
+ c = getc(fp);
+ if (c == '1' || c == '2') {
+ int cc = c;
+ c = getc(fp);
+ if (compatible_flag || c == ' ' || c == '\n' || c == EOF) {
+ while (c != '\n' && c != EOF)
+ c = getc(fp);
+ }
+ else {
+ buf += '.';
+ buf += 'R';
+ buf += cc;
+ }
+ }
+ else {
+ buf += '.';
+ buf += 'R';
+ }
+ }
+ else
+ buf += '.';
+ }
+ if (c == EOF)
+ break;
+ if (is_invalid_input_char(c))
+ error_with_file_and_line(fn, lineno,
+ "invalid input character code %1", c);
+ else {
+ buf += c;
+ if (c == '\n') {
+ is_at_beginning_of_line = true;
+ lineno++;
+ }
+ else
+ is_at_beginning_of_line = false;
+ }
+ }
+ if (fp != stdin)
+ fclose(fp);
+ if (buf.length() > 0 && buf[buf.length() - 1] != '\n')
+ buf += '\n';
+ input_item *it = new input_item(buf, fn);
+ it->next = top;
+ top = it;
+}
+
+void input_stack::push_string(string &s, const char *filename, int lineno)
+{
+ input_item *it = new input_item(s, filename, lineno);
+ it->next = top;
+ top = it;
+}
+
+void input_stack::error(const char *format, const errarg &arg1,
+ const errarg &arg2, const errarg &arg3)
+{
+ const char *filename;
+ int lineno;
+ for (input_item *it = top; it; it = it->next) {
+ it->get_location(&filename, &lineno);
+ error_with_file_and_line(filename, lineno, format, arg1, arg2, arg3);
+ return;
+ }
+ ::error(format, arg1, arg2, arg3);
+}
+
+void command_error(const char *format, const errarg &arg1,
+ const errarg &arg2, const errarg &arg3)
+{
+ input_stack::error(format, arg1, arg2, arg3);
+}
+
+// # not recognized in ""
+// \<newline> is recognized in ""
+// # does not conceal newline
+// if missing closing quote, word extends to end of line
+// no special treatment of \ other than before newline
+// \<newline> not recognized after #
+// ; allowed as alternative to newline
+// ; not recognized in ""
+// don't clear word_buffer; just append on
+// return -1 for EOF, 0 for newline, 1 for word
+
+int get_word(string &word_buffer)
+{
+ int c = input_stack::get_char();
+ for (;;) {
+ if (c == '#') {
+ do {
+ c = input_stack::get_char();
+ } while (c != '\n' && c != EOF);
+ break;
+ }
+ if (c == '\\' && input_stack::peek_char() == '\n')
+ input_stack::skip_char();
+ else if (c != ' ' && c != '\t')
+ break;
+ c = input_stack::get_char();
+ }
+ if (c == EOF)
+ return -1;
+ if (c == '\n' || c == ';')
+ return 0;
+ if (c == '"') {
+ for (;;) {
+ c = input_stack::peek_char();
+ if (c == EOF || c == '\n')
+ break;
+ input_stack::skip_char();
+ if (c == '"') {
+ int d = input_stack::peek_char();
+ if (d == '"')
+ input_stack::skip_char();
+ else
+ break;
+ }
+ else if (c == '\\') {
+ int d = input_stack::peek_char();
+ if (d == '\n')
+ input_stack::skip_char();
+ else
+ word_buffer += '\\';
+ }
+ else
+ word_buffer += c;
+ }
+ return 1;
+ }
+ word_buffer += c;
+ for (;;) {
+ c = input_stack::peek_char();
+ if (c == ' ' || c == '\t' || c == '\n' || c == '#' || c == ';')
+ break;
+ input_stack::skip_char();
+ if (c == '\\') {
+ int d = input_stack::peek_char();
+ if (d == '\n')
+ input_stack::skip_char();
+ else
+ word_buffer += '\\';
+ }
+ else
+ word_buffer += c;
+ }
+ return 1;
+}
+
+union argument {
+ const char *s;
+ int n;
+};
+
+// This is for debugging.
+
+static void echo_command(int argc, argument *argv)
+{
+ for (int i = 0; i < argc; i++)
+ fprintf(stderr, "%s\n", argv[i].s);
+}
+
+static void include_command(int argc, argument *argv)
+{
+ assert(argc == 1);
+ input_stack::push_file(argv[0].s);
+}
+
+static void capitalize_command(int argc, argument *argv)
+{
+ if (argc > 0)
+ capitalize_fields = argv[0].s;
+ else
+ capitalize_fields.clear();
+}
+
+static void accumulate_command(int, argument *)
+{
+ accumulate = 1;
+}
+
+static void no_accumulate_command(int, argument *)
+{
+ accumulate = 0;
+}
+
+static void move_punctuation_command(int, argument *)
+{
+ move_punctuation = 1;
+}
+
+static void no_move_punctuation_command(int, argument *)
+{
+ move_punctuation = 0;
+}
+
+static void sort_command(int argc, argument *argv)
+{
+ if (argc == 0)
+ sort_fields = "AD";
+ else
+ sort_fields = argv[0].s;
+ accumulate = 1;
+}
+
+static void no_sort_command(int, argument *)
+{
+ sort_fields.clear();
+}
+
+static void articles_command(int argc, argument *argv)
+{
+ articles.clear();
+ int i;
+ for (i = 0; i < argc; i++) {
+ articles += argv[i].s;
+ articles += '\0';
+ }
+ int len = articles.length();
+ for (i = 0; i < len; i++)
+ articles[i] = cmlower(articles[i]);
+}
+
+static void database_command(int argc, argument *argv)
+{
+ for (int i = 0; i < argc; i++)
+ database_list.add_file(argv[i].s);
+}
+
+static void default_database_command(int, argument *)
+{
+ search_default = 1;
+}
+
+static void no_default_database_command(int, argument *)
+{
+ search_default = 0;
+}
+
+static void bibliography_command(int argc, argument *argv)
+{
+ have_bibliography = 1;
+ const char *saved_filename = current_filename;
+ int saved_lineno = current_lineno;
+ int saved_label_in_text = label_in_text;
+ label_in_text = 0;
+ if (!accumulate)
+ fputs(".]<\n", stdout);
+ for (int i = 0; i < argc; i++)
+ do_bib(argv[i].s);
+ if (accumulate)
+ output_references();
+ else
+ fputs(".]>\n", stdout);
+ current_filename = saved_filename;
+ current_lineno = saved_lineno;
+ label_in_text = saved_label_in_text;
+}
+
+static void annotate_command(int argc, argument *argv)
+{
+ if (argc > 0)
+ annotation_field = argv[0].s[0];
+ else
+ annotation_field = 'X';
+ if (argc == 2)
+ annotation_macro = argv[1].s;
+ else
+ annotation_macro = "AP";
+}
+
+static void no_annotate_command(int, argument *)
+{
+ annotation_macro.clear();
+ annotation_field = -1;
+}
+
+static void reverse_command(int, argument *argv)
+{
+ reverse_fields = argv[0].s;
+}
+
+static void no_reverse_command(int, argument *)
+{
+ reverse_fields.clear();
+}
+
+static void abbreviate_command(int argc, argument *argv)
+{
+ abbreviate_fields = argv[0].s;
+ period_before_initial = argc > 1 ? argv[1].s : ". ";
+ period_before_last_name = argc > 2 ? argv[2].s : ". ";
+ period_before_other = argc > 3 ? argv[3].s : ". ";
+ period_before_hyphen = argc > 4 ? argv[4].s : ".";
+}
+
+static void no_abbreviate_command(int, argument *)
+{
+ abbreviate_fields.clear();
+}
+
+string search_ignore_fields;
+
+static void search_ignore_command(int argc, argument *argv)
+{
+ if (argc > 0)
+ search_ignore_fields = argv[0].s;
+ else
+ search_ignore_fields = "XYZ";
+ search_ignore_fields += '\0';
+ linear_ignore_fields = search_ignore_fields.contents();
+}
+
+static void no_search_ignore_command(int, argument *)
+{
+ linear_ignore_fields = "";
+}
+
+static void search_truncate_command(int argc, argument *argv)
+{
+ if (argc > 0)
+ linear_truncate_len = argv[0].n;
+ else
+ linear_truncate_len = 6;
+}
+
+static void no_search_truncate_command(int, argument *)
+{
+ linear_truncate_len = -1;
+}
+
+static void discard_command(int argc, argument *argv)
+{
+ if (argc == 0)
+ discard_fields = "XYZ";
+ else
+ discard_fields = argv[0].s;
+ accumulate = 1;
+}
+
+static void no_discard_command(int, argument *)
+{
+ discard_fields.clear();
+}
+
+static void label_command(int, argument *argv)
+{
+ set_label_spec(argv[0].s);
+}
+
+static void abbreviate_label_ranges_command(int argc, argument *argv)
+{
+ abbreviate_label_ranges = 1;
+ label_range_indicator = argc > 0 ? argv[0].s : "-";
+}
+
+static void no_abbreviate_label_ranges_command(int, argument *)
+{
+ abbreviate_label_ranges = 0;
+}
+
+static void label_in_reference_command(int, argument *)
+{
+ label_in_reference = 1;
+}
+
+static void no_label_in_reference_command(int, argument *)
+{
+ label_in_reference = 0;
+}
+
+static void label_in_text_command(int, argument *)
+{
+ label_in_text = 1;
+}
+
+static void no_label_in_text_command(int, argument *)
+{
+ label_in_text = 0;
+}
+
+static void sort_adjacent_labels_command(int, argument *)
+{
+ sort_adjacent_labels = 1;
+}
+
+static void no_sort_adjacent_labels_command(int, argument *)
+{
+ sort_adjacent_labels = 0;
+}
+
+static void date_as_label_command(int argc, argument *argv)
+{
+ if (set_date_label_spec(argc > 0 ? argv[0].s : "D%a*"))
+ date_as_label = 1;
+}
+
+static void no_date_as_label_command(int, argument *)
+{
+ date_as_label = 0;
+}
+
+static void short_label_command(int, argument *argv)
+{
+ if (set_short_label_spec(argv[0].s))
+ short_label_flag = 1;
+}
+
+static void no_short_label_command(int, argument *)
+{
+ short_label_flag = 0;
+}
+
+static void compatible_command(int, argument *)
+{
+ compatible_flag = 1;
+}
+
+static void no_compatible_command(int, argument *)
+{
+ compatible_flag = 0;
+}
+
+static void join_authors_command(int argc, argument *argv)
+{
+ join_authors_exactly_two = argv[0].s;
+ join_authors_default = argc > 1 ? argv[1].s : argv[0].s;
+ join_authors_last_two = argc == 3 ? argv[2].s : argv[0].s;
+}
+
+static void bracket_label_command(int, argument *argv)
+{
+ pre_label = argv[0].s;
+ post_label = argv[1].s;
+ sep_label = argv[2].s;
+}
+
+static void separate_label_second_parts_command(int, argument *argv)
+{
+ separate_label_second_parts = argv[0].s;
+}
+
+static void et_al_command(int argc, argument *argv)
+{
+ et_al = argv[0].s;
+ et_al_min_elide = argv[1].n;
+ if (et_al_min_elide < 1)
+ et_al_min_elide = 1;
+ et_al_min_total = argc >= 3 ? argv[2].n : 0;
+}
+
+static void no_et_al_command(int, argument *)
+{
+ et_al.clear();
+ et_al_min_elide = 0;
+}
+
+typedef void (*command_t)(int, argument *);
+
+/* arg_types is a string describing the numbers and types of arguments.
+s means a string, i means an integer, f is a list of fields, F is
+a single field,
+? means that the previous argument is optional, * means that the
+previous argument can occur any number of times. */
+
+struct S {
+ const char *name;
+ command_t func;
+ const char *arg_types;
+} command_table[] = {
+ { "include", include_command, "s" },
+ { "echo", echo_command, "s*" },
+ { "capitalize", capitalize_command, "f?" },
+ { "accumulate", accumulate_command, "" },
+ { "no-accumulate", no_accumulate_command, "" },
+ { "move-punctuation", move_punctuation_command, "" },
+ { "no-move-punctuation", no_move_punctuation_command, "" },
+ { "sort", sort_command, "s?" },
+ { "no-sort", no_sort_command, "" },
+ { "articles", articles_command, "s*" },
+ { "database", database_command, "ss*" },
+ { "default-database", default_database_command, "" },
+ { "no-default-database", no_default_database_command, "" },
+ { "bibliography", bibliography_command, "ss*" },
+ { "annotate", annotate_command, "F?s?" },
+ { "no-annotate", no_annotate_command, "" },
+ { "reverse", reverse_command, "s" },
+ { "no-reverse", no_reverse_command, "" },
+ { "abbreviate", abbreviate_command, "ss?s?s?s?" },
+ { "no-abbreviate", no_abbreviate_command, "" },
+ { "search-ignore", search_ignore_command, "f?" },
+ { "no-search-ignore", no_search_ignore_command, "" },
+ { "search-truncate", search_truncate_command, "i?" },
+ { "no-search-truncate", no_search_truncate_command, "" },
+ { "discard", discard_command, "f?" },
+ { "no-discard", no_discard_command, "" },
+ { "label", label_command, "s" },
+ { "abbreviate-label-ranges", abbreviate_label_ranges_command, "s?" },
+ { "no-abbreviate-label-ranges", no_abbreviate_label_ranges_command, "" },
+ { "label-in-reference", label_in_reference_command, "" },
+ { "no-label-in-reference", no_label_in_reference_command, "" },
+ { "label-in-text", label_in_text_command, "" },
+ { "no-label-in-text", no_label_in_text_command, "" },
+ { "sort-adjacent-labels", sort_adjacent_labels_command, "" },
+ { "no-sort-adjacent-labels", no_sort_adjacent_labels_command, "" },
+ { "date-as-label", date_as_label_command, "s?" },
+ { "no-date-as-label", no_date_as_label_command, "" },
+ { "short-label", short_label_command, "s" },
+ { "no-short-label", no_short_label_command, "" },
+ { "compatible", compatible_command, "" },
+ { "no-compatible", no_compatible_command, "" },
+ { "join-authors", join_authors_command, "sss?" },
+ { "bracket-label", bracket_label_command, "sss" },
+ { "separate-label-second-parts", separate_label_second_parts_command, "s" },
+ { "et-al", et_al_command, "sii?" },
+ { "no-et-al", no_et_al_command, "" },
+};
+
+static int check_args(const char *types, const char *name,
+ int argc, argument *argv)
+{
+ int argno = 0;
+ while (*types) {
+ if (argc == 0) {
+ if (types[1] == '?')
+ break;
+ else if (types[1] == '*') {
+ assert(types[2] == '\0');
+ break;
+ }
+ else {
+ input_stack::error("missing argument for command '%1'", name);
+ return 0;
+ }
+ }
+ switch (*types) {
+ case 's':
+ break;
+ case 'i':
+ {
+ char *ptr;
+ long n = strtol(argv->s, &ptr, 10);
+ if ((n == 0 && ptr == argv->s)
+ || *ptr != '\0') {
+ input_stack::error("argument %1 for command '%2' must be an integer",
+ argno + 1, name);
+ return 0;
+ }
+ argv->n = (int)n;
+ break;
+ }
+ case 'f':
+ {
+ for (const char *ptr = argv->s; *ptr != '\0'; ptr++)
+ if (!cs_field_name(*ptr)) {
+ input_stack::error("argument %1 for command '%2' must be a list of fields",
+ argno + 1, name);
+ return 0;
+ }
+ break;
+ }
+ case 'F':
+ if (argv->s[0] == '\0' || argv->s[1] != '\0'
+ || !cs_field_name(argv->s[0])) {
+ input_stack::error("argument %1 for command '%2' must be a field name",
+ argno + 1, name);
+ return 0;
+ }
+ break;
+ default:
+ assert(0);
+ }
+ if (types[1] == '?')
+ types += 2;
+ else if (types[1] != '*')
+ types += 1;
+ --argc;
+ ++argv;
+ ++argno;
+ }
+ if (argc > 0) {
+ input_stack::error("too many arguments for command '%1'", name);
+ return 0;
+ }
+ return 1;
+}
+
+static void execute_command(const char *name, int argc, argument *argv)
+{
+ for (unsigned int i = 0;
+ i < sizeof(command_table)/sizeof(command_table[0]); i++)
+ if (strcmp(name, command_table[i].name) == 0) {
+ if (check_args(command_table[i].arg_types, name, argc, argv))
+ (*command_table[i].func)(argc, argv);
+ return;
+ }
+ input_stack::error("unknown command '%1'", name);
+}
+
+static void command_loop()
+{
+ string command;
+ for (;;) {
+ command.clear();
+ int res = get_word(command);
+ if (res != 1) {
+ if (res == 0)
+ continue;
+ break;
+ }
+ int argc = 0;
+ command += '\0';
+ while ((res = get_word(command)) == 1) {
+ argc++;
+ command += '\0';
+ }
+ argument *argv = new argument[argc];
+ const char *ptr = command.contents();
+ for (int i = 0; i < argc; i++)
+ argv[i].s = ptr = strchr(ptr, '\0') + 1;
+ execute_command(command.contents(), argc, argv);
+ delete[] argv;
+ if (res == -1)
+ break;
+ }
+}
+
+void process_commands(string &s, const char *file, int lineno)
+{
+ const char *saved_filename = current_filename;
+ int saved_lineno = current_lineno;
+ input_stack::init();
+ current_filename = file;
+ // Report diagnostics with respect to line _before_ last newline seen.
+ current_lineno = lineno - 1;
+ input_stack::push_string(s, file, lineno);
+ command_loop();
+ current_filename = saved_filename;
+ current_lineno = saved_lineno;
+}
+
+// Local Variables:
+// fill-column: 72
+// mode: C++
+// End:
+// vim: set cindent noexpandtab shiftwidth=2 textwidth=72:
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 17:31:23 +0000