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