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src/judy-1.0.5/tool/jhton.c  view on Meta::CPAN

#define	ISSPACE(Char) isspace((int) (Char))	// for convenience with lint.
#define	ISDIGIT(Char) isdigit((int) (Char))
#define	ISUPPER(Char) isupper((int) (Char))

#define	PUTS(String) (void) fputs(String, stdout)	// for convenience.
#define	PUTC(Char)   (void) putc((int) (Char), stdout)

#ifndef DEBUG
#define NDEBUG			// turn off assertions by default.
#endif

// Shorthand notation to avoid #ifdefs for single-line conditional statement:
//
// Warning:  This cannot be used around compiler directives, such as
// "#include", nor in the case where Code contains a comma other than nested
// within parentheses or quotes.

#ifndef DEBUG
#define	DBGCODE(Code) // null.
#else
#define	DBGCODE(Code) Code
#endif


// ****************************************************************************
// MISCELLANEOUS GLOBAL VALUES:

#define	FUNCTION			// null; easy to find functions.
#define	FALSE	0
#define	TRUE	1
#define	CHNULL	('\0')
#define	PCNULL	((char *) NULL)
typedef int bool_t;			// for clarity with Boolean values.

char * gc_usage[] = {
    "usage: %s filename.htm[l]",
    "",
    "Reads restricted (Judy-specific) HTML from filename.htm[l] and emits",
    "equivalent nroff -man to stdout.",
    PCNULL,
};

char * gc_myname;			// how program was invoked.

#define	OKEXIT	0
#define	NOEXIT	0			// values for Error().
#define	ERREXIT	1
#define	USAGE	2
#define	NOERRNO	0

// Prefix for printf formats:

#define	FILELINE "File \"%s\", line %d: "

// Common error string:

char * FmtErrLineEnds = FILELINE "Input line ends within an HTML tag; for this "
			"translator, all tags must be on a single input line";

// Macros for skipping whitespace or non-whitespace; in the latter case,
// stopping at end of line or end of tag:

#define	SKIPSPACE(Pch)	   { while (ISSPACE(*(Pch))) ++(Pch); }

#define	SKIPNONSPACE(Pch)  { while ((! ISSPACE(*(Pch))) \
				 && (*(Pch) != CHNULL)  \
				 && (*(Pch) != '>')) ++(Pch); }

// Highest line number + 1, and last input line number that caused output:

int g_linenumlim;
int g_prevlinenum = 0;

// <PRE> block equivalents in nroff need some special handling for bold font
// and for continuing a tagged paragraph; these are bit flags:

#define	INPRE_BLOCK  0x1	// came from <PRE>.
#define	INPRE_BOLD   0x2	// came from <B><PRE>.
#define	INPRE_INDENT 0x4	// under <DL> below top level.


// ****************************************************************************
// DOCUMENT NODE TYPES:
//
// If an HTML tag is not in this list, it's unrecognized and causes a fatal
// error.  Otherwise the tag type (dn_type) is one of DN_TYPE_*, which are
// defined so the code can use them, but they MUST match the order of
// initialization of g_dntype[].
//
// Note:  The default node type is DN_TYPE_TEXT, that is, text outside of any
// tag.

enum {
	DN_TYPE_TEXT = 0,
	DN_TYPE_HTML,
	DN_TYPE_HEAD,
	DN_TYPE_TITLE,
	DN_TYPE_BODY,
	DN_TYPE_COMM,
	DN_TYPE_TABLE,
	DN_TYPE_TR,
	DN_TYPE_TD,
	DN_TYPE_DL,
	DN_TYPE_DT,
	DN_TYPE_DD,
	DN_TYPE_A,
	DN_TYPE_B,
	DN_TYPE_I,
	DN_TYPE_PRE,
	DN_TYPE_P,
	DN_TYPE_BR
};

// Regarding dnt_nest:  If an HTML tag type is marked as nesting, that means
// it is required not to be a singleton in this context; it must have a closing
// tag, and when the tree is built, the intervening text is nested as a child.
// Otherwise, intervening text is a sibling; a closing tag is allowed (whether
// or not this makes sense), but is not required; however, if present, it must
// match.