mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-17 10:06:13 +00:00
255 lines
5.4 KiB
C
255 lines
5.4 KiB
C
/* Give this program DOCSTR.mm.nn as standard input
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and it outputs to standard output
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a file of texinfo input containing the doc strings.
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This version sorts the output by function name.
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*/
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#include <stdio.h>
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#include <ctype.h>
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extern char *malloc ();
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char *xmalloc ();
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#define NUL '\0'
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#define MARKER '\037'
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#define DEBUG 0
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typedef struct line LINE;
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struct line
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{
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LINE *next; /* ptr to next or NULL */
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char *line; /* text of the line */
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};
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typedef struct docstr DOCSTR;
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struct docstr /* Allocated thing for an entry. */
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{
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DOCSTR *next; /* next in the chain */
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char *name; /* name of the function or var */
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LINE *first; /* first line of doc text. */
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char type; /* 'F' for function, 'V' for variable */
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};
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/* Print error message. `s1' is printf control string, `s2' is arg for it. */
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void
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error (s1, s2)
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char *s1, *s2;
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{
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fprintf (stderr, "sorted-doc: ");
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fprintf (stderr, s1, s2);
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fprintf (stderr, "\n");
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}
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/* Print error message and exit. */
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void
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fatal (s1, s2)
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char *s1, *s2;
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{
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error (s1, s2);
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exit (1);
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}
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/* Like malloc but get fatal error if memory is exhausted. */
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char *
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xmalloc (size)
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int size;
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{
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char *result = malloc ((unsigned)size);
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if (result == NULL)
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fatal ("%s", "virtual memory exhausted");
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return result;
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}
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char *
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xstrdup (str)
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char * str;
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{
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char *buf = xmalloc (strlen (str) + 1);
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(void) strcpy (buf, str);
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return (buf);
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}
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/* Comparison function for qsort to call. */
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int
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cmpdoc (a, b)
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DOCSTR **a;
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DOCSTR **b;
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{
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register int val = strcmp ((*a)->name, (*b)->name);
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if (val) return val;
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return (*a)->type - (*b)->type;
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}
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enum state
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{
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WAITING, BEG_NAME, NAME_GET, BEG_DESC, DESC_GET
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};
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char *states[] =
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{
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"WAITING", "BEG_NAME", "NAME_GET", "BEG_DESC", "DESC_GET"
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};
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int
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main ()
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{
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register DOCSTR *dp = NULL; /* allocated DOCSTR */
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register LINE *lp = NULL; /* allocated line */
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register char *bp; /* ptr inside line buffer */
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register enum state state = WAITING; /* state at start */
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int cnt = 0; /* number of DOCSTRs read */
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DOCSTR *docs; /* chain of allocated DOCSTRS */
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char buf[512]; /* line buffer */
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while (1) /* process one char at a time */
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{
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/* this char from the DOCSTR file */
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register int ch = getchar ();
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/* Beginnings */
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if (state == WAITING)
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{
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if (ch == MARKER)
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state = BEG_NAME;
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}
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else if (state == BEG_NAME)
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{
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cnt++;
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if (dp == NULL) /* first dp allocated */
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{
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docs = dp = (DOCSTR*) xmalloc (sizeof (DOCSTR));
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}
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else /* all the rest */
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{
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dp->next = (DOCSTR*) xmalloc (sizeof (DOCSTR));
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dp = dp->next;
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}
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lp = NULL;
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dp->next = NULL;
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bp = buf;
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state = NAME_GET;
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/* Record whether function or variable. */
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dp->type = ch;
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ch = getchar ();
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}
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else if (state == BEG_DESC)
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{
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if (lp == NULL) /* first line for dp */
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{
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dp->first = lp = (LINE*)xmalloc (sizeof (LINE));
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}
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else /* continuing lines */
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{
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lp->next = (LINE*)xmalloc (sizeof (LINE));
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lp = lp->next;
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}
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lp->next = NULL;
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bp = buf;
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state = DESC_GET;
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}
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/* process gets */
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if (state == NAME_GET || state == DESC_GET)
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{
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if (ch != MARKER && ch != '\n' && ch != EOF)
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{
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*bp++ = ch;
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}
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else /* saving and changing state */
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{
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*bp = NUL;
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bp = xstrdup (buf);
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if (state == NAME_GET)
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dp->name = bp;
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else
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lp->line = bp;
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bp = buf;
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state = (ch == MARKER) ? BEG_NAME : BEG_DESC;
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}
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} /* NAME_GET || DESC_GET */
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if (ch == EOF)
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break;
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}
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{
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DOCSTR **array;
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register int i; /* counter */
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/* build array of ptrs to DOCSTRs */
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array = (DOCSTR**)xmalloc (cnt * sizeof (*array));
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for (dp = docs, i = 0; dp != NULL ; dp = dp->next)
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array[i++] = dp;
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/* sort the array by name; within each name, by type */
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qsort ((char*)array, cnt, sizeof (DOCSTR*), cmpdoc);
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/* write the output header */
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printf ("\\input texinfo @c -*-texinfo-*-\n");
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printf ("@setfilename ../info/summary\n");
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printf ("@settitle Command Summary for GNU Emacs\n");
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printf ("@unnumbered Command Summary for GNU Emacs\n");
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printf ("@table @asis\n");
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printf ("\n");
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printf ("@let@ITEM@item\n");
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printf ("@def@item{@filbreak@vskip5pt@ITEM}\n");
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printf ("@font@tensy cmsy10 scaled @magstephalf\n");
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printf ("@font@teni cmmi10 scaled @magstephalf\n");
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printf ("@def\\{{@tensy@char110}}\n"); /* this backslash goes with cmr10 */
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printf ("@def|{{@tensy@char106}}\n");
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printf ("@def@{{{@tensy@char102}}\n");
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printf ("@def@}{{@tensy@char103}}\n");
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printf ("@def<{{@teni@char62}}\n");
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printf ("@def>{{@teni@char60}}\n");
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printf ("@chardef@@64\n");
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printf ("@catcode43=12\n");
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printf ("@tableindent-0.2in\n");
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/* print each function from the array */
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for (i = 0; i < cnt; i++)
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{
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printf ("\n@item %s @code{%s}\n@display\n",
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array[i]->type == 'F' ? "Function" : "Variable",
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array[i]->name);
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for (lp = array[i]->first; lp != NULL ; lp = lp->next)
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{
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for (bp = lp->line; *bp; bp++)
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{
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/* the characters "@{}" need special treatment */
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if (*bp == '@' || *bp == '{' || *bp == '}')
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{
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putchar('@');
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}
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putchar(*bp);
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}
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putchar ('\n');
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}
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printf("@end display\n");
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}
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printf ("@end table\n");
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printf ("@bye\n");
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}
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return 0;
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}
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