-/* Subroutine of output_set_maximum_length. Set up BUFFER's
- internal maximum characters per line. */
-static void
-set_real_maximum_length (buffer)
- output_buffer *buffer;
-{
- /* If we're told not to wrap lines then do the obvious thing. In case
- we'll emit prefix only once per diagnostic message, it is appropriate
- not to increase unnecessarily the line-length cut-off. */
- if (!output_is_line_wrapping (buffer)
- || output_prefixing_rule (buffer) == DIAGNOSTICS_SHOW_PREFIX_ONCE
- || output_prefixing_rule (buffer) == DIAGNOSTICS_SHOW_PREFIX_NEVER)
- line_wrap_cutoff (buffer) = output_line_cutoff (buffer);
- else
- {
- int prefix_length = buffer->state.prefix ?
- strlen (buffer->state.prefix) : 0;
- /* If the prefix is ridiculously too long, output at least
- 32 characters. */
- if (output_line_cutoff (buffer) - prefix_length < 32)
- line_wrap_cutoff (buffer) = output_line_cutoff (buffer) + 32;
- else
- line_wrap_cutoff (buffer) = output_line_cutoff (buffer);
- }
-}
-
-/* Sets the number of maximum characters per line BUFFER can output
- in line-wrapping mode. A LENGTH value 0 suppresses line-wrapping. */
-void
-output_set_maximum_length (buffer, length)
- output_buffer *buffer;
- int length;
-{
- output_line_cutoff (buffer) = length;
- set_real_maximum_length (buffer);
-}
-
-/* Sets BUFFER's PREFIX. */
-void
-output_set_prefix (buffer, prefix)
- output_buffer *buffer;
- const char *prefix;
-{
- buffer->state.prefix = prefix;
- set_real_maximum_length (buffer);
- prefix_was_emitted_for (buffer) = false;
- output_indentation (buffer) = 0;
-}
-
-/* Return a pointer to the last character emitted in the output
- BUFFER area. A NULL pointer means no character available. */
-const char *
-output_last_position (buffer)
- const output_buffer *buffer;
-{
- const char *p = NULL;
-
- if (obstack_base (&buffer->obstack) != obstack_next_free (&buffer->obstack))
- p = ((const char *) obstack_next_free (&buffer->obstack)) - 1;
- return p;
-}
-
-/* Free BUFFER's prefix, a previously malloc'd string. */
-void
-output_destroy_prefix (buffer)
- output_buffer *buffer;
-{
- if (buffer->state.prefix != NULL)
- {
- free ((char *) buffer->state.prefix);
- buffer->state.prefix = NULL;
- }
-}
-
-/* Zero out any text output so far in BUFFER. */
-void
-output_clear_message_text (buffer)
- output_buffer *buffer;
-{
- obstack_free (&buffer->obstack, obstack_base (&buffer->obstack));
- output_text_length (buffer) = 0;
-}
-
-/* Zero out any formatting data used so far by BUFFER. */
-static void
-output_clear_data (buffer)
- output_buffer *buffer;
-{
- prefix_was_emitted_for (buffer) = false;
- output_indentation (buffer) = 0;
-}
-
-/* Construct an output BUFFER with PREFIX and of MAXIMUM_LENGTH
- characters per line. */
-void
-init_output_buffer (buffer, prefix, maximum_length)
- output_buffer *buffer;
- const char *prefix;
- int maximum_length;
-{
- memset (buffer, 0, sizeof (output_buffer));
- obstack_init (&buffer->obstack);
- output_buffer_attached_stream (buffer) = stderr;
- output_line_cutoff (buffer) = maximum_length;
- output_prefixing_rule (buffer) = diagnostic_prefixing_rule (global_dc);
- output_set_prefix (buffer, prefix);
- output_text_length (buffer) = 0;
- output_clear_data (buffer);
-}
-
-/* Reinitialize BUFFER. */
-void
-output_clear (buffer)
- output_buffer *buffer;
-{
- output_clear_message_text (buffer);
- output_clear_data (buffer);
-}
-
-/* Finishes constructing a NULL-terminated character string representing
- the BUFFERed message. */
-const char *
-output_finalize_message (buffer)
- output_buffer *buffer;
-{
- obstack_1grow (&buffer->obstack, '\0');
- return output_message_text (buffer);
-}
-
-/* Return the amount of characters BUFFER can accept to
- make a full line. */
-int
-output_space_left (buffer)
- const output_buffer *buffer;
-{
- return line_wrap_cutoff (buffer) - output_text_length (buffer);
-}
-
-/* Write out BUFFER's prefix. */
-void
-output_emit_prefix (buffer)
- output_buffer *buffer;
-{
- if (buffer->state.prefix != NULL)
- {
- switch (output_prefixing_rule (buffer))
- {
- default:
- case DIAGNOSTICS_SHOW_PREFIX_NEVER:
- break;
-
- case DIAGNOSTICS_SHOW_PREFIX_ONCE:
- if (prefix_was_emitted_for (buffer))
- {
- output_indent (buffer);
- break;
- }
- output_indentation (buffer) += 3;
- /* Fall through. */
-
- case DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE:
- {
- int prefix_length = strlen (buffer->state.prefix);
- output_append_r (buffer, buffer->state.prefix, prefix_length);
- prefix_was_emitted_for (buffer) = true;
- }
- break;
- }
- }
-}
-
-/* Have BUFFER start a new line. */
-void
-output_add_newline (buffer)
- output_buffer *buffer;
-{
- obstack_1grow (&buffer->obstack, '\n');
- output_text_length (buffer) = 0;
-}
-
-/* Appends a character to BUFFER. */
-void
-output_add_character (buffer, c)
- output_buffer *buffer;
- int c;
-{
- if (output_is_line_wrapping (buffer) && output_space_left (buffer) <= 0)
- output_add_newline (buffer);
- obstack_1grow (&buffer->obstack, c);
- ++output_text_length (buffer);
-}
-
-/* Adds a space to BUFFER. */
-void
-output_add_space (buffer)
- output_buffer *buffer;
-{
- if (output_is_line_wrapping (buffer) && output_space_left (buffer) <= 0)
- {
- output_add_newline (buffer);
- return;
- }
- obstack_1grow (&buffer->obstack, ' ');
- ++output_text_length (buffer);
-}
-
-/* These functions format an INTEGER into BUFFER as suggested by their
- names. */
-void
-output_decimal (buffer, i)
- output_buffer *buffer;
- int i;
-{
- output_formatted_scalar (buffer, "%d", i);
-}
-
-static inline void
-output_long_decimal (output_buffer *buffer, long int i)
-{
- output_formatted_scalar (buffer, "%ld", i);
-}
-
-static inline void
-output_unsigned_decimal (output_buffer *buffer, unsigned int i)
-{
- output_formatted_scalar (buffer, "%u", i);
-}
-
-static inline void
-output_long_unsigned_decimal (output_buffer *buffer, long unsigned int i)
-{
- output_formatted_scalar (buffer, "%lu", i);
-}
-
-static inline void
-output_octal (output_buffer *buffer, unsigned int i)
-{
- output_formatted_scalar (buffer, "%o", i);
-}
-
-static inline void
-output_long_octal (output_buffer *buffer, long unsigned int i)
-{
- output_formatted_scalar (buffer, "%lo", i);
-}
-
-static inline void
-output_hexadecimal (output_buffer *buffer, unsigned int i)
-{
- output_formatted_scalar (buffer, "%x", i);
-}
-
-static inline void
-output_long_hexadecimal (output_buffer *buffer, long unsigned int i)
-{
- output_formatted_scalar (buffer, "%lx", i);
-}
-
-static inline void
-output_pointer (output_buffer *buffer, void *p)
-{
- output_formatted_scalar (buffer, HOST_PTR_PRINTF, p);
-}
-
-/* Append to BUFFER a string specified by its STARTING character
- and LENGTH. */
-static void
-output_append_r (buffer, start, length)
- output_buffer *buffer;
- const char *start;
- int length;
-{
- obstack_grow (&buffer->obstack, start, length);
- output_text_length (buffer) += length;
-}
-
-/* Append a string deliminated by START and END to BUFFER. No wrapping is
- done. However, if beginning a new line then emit BUFFER->state.prefix
- and skip any leading whitespace if appropriate. The caller must ensure
- that it is safe to do so. */
-void
-output_append (buffer, start, end)
- output_buffer *buffer;
- const char *start;
- const char *end;
-{
- /* Emit prefix and skip whitespace if we're starting a new line. */
- if (is_starting_newline (buffer))
- {
- output_emit_prefix (buffer);
- if (output_is_line_wrapping (buffer))
- while (start != end && *start == ' ')
- ++start;
- }
- output_append_r (buffer, start, end - start);
-}
-
-static void
-output_indent (buffer)
- output_buffer *buffer;
-{
- int n = output_indentation (buffer);
- int i;
-
- for (i = 0; i < n; ++i)
- output_add_character (buffer, ' ');
-}
-
-/* Wrap a text delimited by START and END into BUFFER. */
-static void
-wrap_text (buffer, start, end)
- output_buffer *buffer;
- const char *start;
- const char *end;
-{
- bool is_wrapping = output_is_line_wrapping (buffer);
-
- while (start != end)
- {
- /* Dump anything bordered by whitespaces. */
- {
- const char *p = start;
- while (p != end && *p != ' ' && *p != '\n')
- ++p;
- if (is_wrapping && p - start >= output_space_left (buffer))
- output_add_newline (buffer);
- output_append (buffer, start, p);
- start = p;
- }
-
- if (start != end && *start == ' ')
- {
- output_add_space (buffer);
- ++start;
- }
- if (start != end && *start == '\n')
- {
- output_add_newline (buffer);
- ++start;
- }
- }
-}
-
-/* Same as wrap_text but wrap text only when in line-wrapping mode. */
-static void
-maybe_wrap_text (buffer, start, end)
- output_buffer *buffer;
- const char *start;
- const char *end;
-{
- if (output_is_line_wrapping (buffer))
- wrap_text (buffer, start, end);
- else
- output_append (buffer, start, end);
-}
-
-
-/* Append a STRING to BUFFER; the STRING might be line-wrapped if in
- appropriate mode. */
-void
-output_add_string (buffer, str)
- output_buffer *buffer;
- const char *str;
-{
- maybe_wrap_text (buffer, str, str + (str ? strlen (str) : 0));
-}
-
-/* Append an identifier ID to BUFFER. */
-void
-output_add_identifier (buffer, id)
- output_buffer *buffer;
- tree id;
-{
- output_append (buffer, IDENTIFIER_POINTER (id),
- IDENTIFIER_POINTER (id) + IDENTIFIER_LENGTH (id));
-}
-
-/* Flush the content of BUFFER onto the attached stream,
- and reinitialize. */
-
-static void
-output_buffer_to_stream (buffer)
- output_buffer *buffer;
-{
- const char *text = output_finalize_message (buffer);
- fputs (text, output_buffer_attached_stream (buffer));
- output_clear_message_text (buffer);
-}
-
-/* Format a message pointed to by TEXT. The following format specifiers are
- recognized as being language independent:
- %d, %i: (signed) integer in base ten.
- %u: unsigned integer in base ten.
- %o: unsigned integer in base eight.
- %x: unsigned integer in base sixteen.
- %ld, %li, %lo, %lu, %lx: long versions of the above.
- %c: character.
- %s: string.
- %p: pointer.
- %%: `%'.
- %*.s: a substring the length of which is specified by an integer.
- %H: location_t. */
-static void
-output_format (buffer, text)
- output_buffer *buffer;
- text_info *text;
-{
- for (; *text->format_spec; ++text->format_spec)
- {
- bool long_integer = 0;
-
- /* Ignore text. */
- {
- const char *p = text->format_spec;
- while (*p && *p != '%')
- ++p;
- wrap_text (buffer, text->format_spec, p);
- text->format_spec = p;
- }
-
- if (*text->format_spec == '\0')
- break;
-
- /* We got a '%'. Let's see what happens. Record whether we're
- parsing a long integer format specifier. */
- if (*++text->format_spec == 'l')
- {
- long_integer = true;
- ++text->format_spec;
- }
-
- /* Handle %c, %d, %i, %ld, %li, %lo, %lu, %lx, %o, %s, %u,
- %x, %p, %.*s; %%. And nothing else. Front-ends should install
- printers to grok language specific format specifiers. */
- switch (*text->format_spec)
- {
- case 'c':
- output_add_character (buffer, va_arg (*text->args_ptr, int));
- break;
-
- case 'd':
- case 'i':
- if (long_integer)
- output_long_decimal (buffer, va_arg (*text->args_ptr, long int));
- else
- output_decimal (buffer, va_arg (*text->args_ptr, int));
- break;
-
- case 'o':
- if (long_integer)
- output_long_octal (buffer,
- va_arg (*text->args_ptr, unsigned long int));
- else
- output_octal (buffer, va_arg (*text->args_ptr, unsigned int));
- break;
-
- case 's':
- output_add_string (buffer, va_arg (*text->args_ptr, const char *));
- break;
-
- case 'p':
- output_pointer (buffer, va_arg (*text->args_ptr, void *));
- break;
-
- case 'u':
- if (long_integer)
- output_long_unsigned_decimal
- (buffer, va_arg (*text->args_ptr, long unsigned int));
- else
- output_unsigned_decimal
- (buffer, va_arg (*text->args_ptr, unsigned int));
- break;
-
- case 'x':
- if (long_integer)
- output_long_hexadecimal
- (buffer, va_arg (*text->args_ptr, unsigned long int));
- else
- output_hexadecimal
- (buffer, va_arg (*text->args_ptr, unsigned int));
- break;
-
- case '%':
- output_add_character (buffer, '%');
- break;
-
- case 'H':
- {
- const location_t *locus = va_arg (*text->args_ptr, location_t *);
- output_add_string (buffer, "file '");
- output_add_string (buffer, locus->file);
- output_add_string (buffer, "', line ");
- output_decimal (buffer, locus->line);
- }
- break;
-
- case '.':
- {
- int n;
- const char *s;
- /* We handle no precision specifier but `%.*s'. */
- if (*++text->format_spec != '*')
- abort ();
- else if (*++text->format_spec != 's')
- abort ();
- n = va_arg (*text->args_ptr, int);
- s = va_arg (*text->args_ptr, const char *);
- output_append (buffer, s, s + n);
- }
- break;
-
- default:
- if (!buffer->format_decoder
- || !(*buffer->format_decoder) (buffer, text))
- {
- /* Hmmm. The front-end failed to install a format translator
- but called us with an unrecognized format. Or, maybe, the
- translated string just contains an invalid format, or
- has formats in the wrong order. Sorry. */
- abort ();
- }
- }
- }
-}
-