27865744029

Committed 20 Jun 2026 08:32AM UTC coverage: 92.264% (-0.005%) from 92.269%

Build # 27865744029

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push

github

Committed by

nickg

Commit Message

Bump version to 1.21.1

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78741 of 85343 relevant lines covered (92.26%)

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93.43

/src/printf.c

//
//  Copyright (C) 2025-2026  Nick Gasson
//
//  This program 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.
//
//  This program 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 "util.h"
#include "ident.h"
#include "mir/mir-node.h"
#include "object.h"
#include "printf.h"
#include "thread.h"
#include "type.h"

#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>

#define ANSI_RESET      0
#define ANSI_BOLD       1
#define ANSI_FG_BLACK   30
#define ANSI_FG_RED     31
#define ANSI_FG_GREEN   32
#define ANSI_FG_YELLOW  33
#define ANSI_FG_BLUE    34
#define ANSI_FG_MAGENTA 35
#define ANSI_FG_CYAN    36
#define ANSI_FG_WHITE   37

#define MAX_ARGS 25

typedef struct _printf_state printf_state_t;
typedef struct _printf_arg printf_arg_t;

typedef union {
   long long  ll;
   long       l;
   size_t     z;
   double     f;
   int        i;
   void      *p;
} printf_value_t;

typedef int (*fmt_fn_t)(ostream_t *, printf_state_t *, printf_arg_t *);

typedef struct _printf_arg {
   const char     *start;
   size_t          len;
   fmt_fn_t        fn;
   printf_value_t  value;
   int             precision;
} printf_arg_t;

typedef struct _printf_state {
   printf_arg_t args[MAX_ARGS];
   unsigned     nargs;
   unsigned     pos;
} printf_state_t;

typedef struct {
   const char *name;
   int         value;
} color_escape_t;

static const color_escape_t escapes[] = {
   { "",        ANSI_RESET },
   { "bold",    ANSI_BOLD },
   { "black",   ANSI_FG_BLACK },
   { "red",     ANSI_FG_RED },
   { "green",   ANSI_FG_GREEN },
   { "yellow",  ANSI_FG_YELLOW },
   { "blue",    ANSI_FG_BLUE },
   { "magenta", ANSI_FG_MAGENTA },
   { "cyan",    ANSI_FG_CYAN },
   { "white",   ANSI_FG_WHITE },
};

static int printf_interpret(ostream_t *os, printf_state_t *state,
                            const char *fmt, const char *end);

int ostream_write(ostream_t *os, const char *buf, size_t len)
{
   (*os->callback)(buf, len, os->context);
   return len;
}

int ostream_putc(ostream_t *os, char ch)
{
   char buf[1] = { ch };
   return ostream_write(os, buf, 1);
}

int ostream_puts(ostream_t *os, const char *str)
{
   if (str == NULL)
      return ostream_write(os, "(null)", 6);
   else
      return ostream_write(os, str, strlen(str));
}

static int format_ident(ostream_t *os, printf_state_t *state, printf_arg_t *arg)
{
   ident_t id = arg->value.p;
   return ostream_write(os, istr(id), ident_len(id));
}

static int format_ident_toupper(ostream_t *os, printf_state_t *state,
                                printf_arg_t *arg)
{
   ident_t id = arg->value.p;
   size_t len = ident_len(id);
   const char *str = istr(id);
   int nchars = 0;
   char chunk[32];

   for (int i = 0; i < len; i += sizeof(chunk)) {
      const int tocopy = MIN(sizeof(chunk), len - i);
      for (int j = 0; j < tocopy; j++)
         chunk[j] = toupper_iso88591(str[i + j]);

      nchars += ostream_write(os, chunk, tocopy);
   }

   return nchars;
}

static int format_type(ostream_t *os, printf_state_t *state, printf_arg_t *arg)
{
   type_t type = arg->value.p;

   // Print a fully qualified name if there is another type in the
   // argument list with the same simple name

   for (int i = 0; i < state->nargs; i++) {
      const printf_arg_t *other = &(state->args[i]);
      if (other != arg && other->fn == format_type)
         return ostream_puts(os, type_pp2(type, other->value.p));
   }

   return ostream_puts(os, type_pp(type));
}

static int format_object_kind(ostream_t *os, printf_state_t *state,
                              printf_arg_t *arg)
{
   object_t *obj = arg->value.p;
   return ostream_puts(os, object_kind_str(obj));
}

static int format_mir(ostream_t *os, printf_state_t *state, printf_arg_t *arg)
{
   mir_value_t *value = arg->value.p;
   char buf[64];

   switch (value->tag) {
   case MIR_TAG_NODE:
      checked_sprintf(buf, sizeof(buf), "%%%d", value->id);
      break;
   case MIR_TAG_CONST:
      checked_sprintf(buf, sizeof(buf), "#%d",
                      value->id - (1 << (_MIR_ID_BITS - 1)));
      break;
   default:
      checked_sprintf(buf, sizeof(buf), "{tag:%d, id:%x}",
                      value->tag, value->id);
      break;
   }

   return ostream_puts(os, buf);
}

static int delegate(ostream_t *os, printf_state_t *s, printf_arg_t *arg, ...)
{
   char spec[32];
   assert(arg->len + 1 < sizeof(spec));
   memcpy(spec, arg->start, arg->len);
   spec[arg->len] = '\0';

   va_list ap, ap2;
   va_start(ap, arg);
   va_copy(ap2, ap);

   char small[64];
   int req = vsnprintf(small, sizeof(small), spec, ap);

   if (req + 1 > sizeof(small)) {
      char *large = xmalloc(req + 1);
      vsnprintf(large, req + 1, spec, ap2);
      ostream_write(os, large, req);
      free(large);
   }
   else
      ostream_write(os, small, req);

   va_end(ap);
   va_end(ap2);
   return req;
}

static fmt_fn_t get_pointer_formatter(char ch)
{
   switch (ch) {
   case 'i': return format_ident;
   case 'I': return format_ident_toupper;
   case 'T': return format_type;
   case 'K': return format_object_kind;
   case 'M': return format_mir;
   default: return NULL;
   }
}

static int ansi_escape(ostream_t *os, printf_state_t *state, const char **fmt)
{
   bool has_format = false;
   const char *start = *fmt;
   do {
      has_format |= (**fmt == '%');
      (*fmt)++;
   } while (**fmt != '\0' && **fmt != '$');

   if (**fmt == '\0')
      return ostream_write(os, start, *fmt - start);

   const char *end = *fmt;
   (*fmt)++;   // Advance past final '$'

   size_t len = len = *fmt - start - 2;
   const char *e = e = start + 1;
   LOCAL_TEXT_BUF tb = NULL;

   if (has_format) {
      // Expand any embedded formatting inside the ANSI escape
      tb = tb_new();

      ostream_t aos = {
         tb_ostream_write,
         tb,
         os->charset,
      };

      printf_interpret(&aos, state, start + 1, end);

      e = tb_get(tb);
      len = tb_len(tb);
   }

   bool bold;
   if ((bold = (*e == '!')))
      ++e, --len;

   bool bright;
   if ((bright = (*e == '+')))
      ++e, --len;

   if (*e == '#') {
      char *eptr;
      int code = strtoul(e + 1, &eptr, 10);
      if (eptr == e + len) {
         char buf[16];
         if (bold)
            checked_sprintf(buf, sizeof(buf), "\033[1;38;5;%dm", code);
         else
            checked_sprintf(buf, sizeof(buf), "\033[38;5;%dm", code);

         if (os->flags & OS_COLOR)
            ostream_puts(os, buf);

         return 0;
      }
   }

   if (strncmp(e, "link:", 5) == 0) {
      const char *bel = strchr(e, '\07');

#ifndef __MINGW32__    // Winpty doesn't recognise these
      if (os->flags & OS_TERMINAL) {
         ostream_puts(os, "\033]8;;");
         ostream_write(os, e + 5, len - 5);
         ostream_puts(os, "\033]8;;\07");
         return e + len - bel - 1;
      }
#endif

      return ostream_write(os, bel + 1, e + len - bel - 1);
   }

   for (int i = 0; i < ARRAY_LEN(escapes); i++) {
      if (strncmp(e, escapes[i].name, len) == 0) {
         int code = escapes[i].value + (bright ? 60 : 0);
         char buf[16];
         if (bold)
            checked_sprintf(buf, sizeof(buf), "\033[1;%dm", code);
         else
            checked_sprintf(buf, sizeof(buf), "\033[%dm", code);

         if (os->flags & OS_COLOR)
            ostream_puts(os, buf);

         return 0;
      }
   }

   return ostream_write(os, start, *fmt - start);
}

static int format_z(ostream_t *os, printf_state_t *s, printf_arg_t *arg)
{
   assert(arg->precision == INT_MIN);
   return delegate(os, s, arg, arg->value.z);
}

static int format_ll(ostream_t *os, printf_state_t *s, printf_arg_t *arg)
{
   if (arg->precision != INT_MIN)
      return delegate(os, s, arg, arg->precision, arg->value.ll);
   else
      return delegate(os, s, arg, arg->value.ll);
}

static int format_l(ostream_t *os, printf_state_t *s, printf_arg_t *arg)
{
   if (arg->precision != INT_MIN)
      return delegate(os, s, arg, arg->precision, arg->value.l);
   else
      return delegate(os, s, arg, arg->value.l);
}

static int format_i(ostream_t *os, printf_state_t *s, printf_arg_t *arg)
{
   if (arg->precision != INT_MIN)
      return delegate(os, s, arg, arg->precision, arg->value.i);
   else
      return delegate(os, s, arg, arg->value.i);
}

static int format_f(ostream_t *os, printf_state_t *s, printf_arg_t *arg)
{
   if (arg->precision != INT_MIN)
      return delegate(os, s, arg, arg->precision, arg->value.f);
   else
      return delegate(os, s, arg, arg->value.f);
}

static int format_s(ostream_t *os, printf_state_t *s, printf_arg_t *arg)
{
   if (arg->precision != INT_MIN)
      return delegate(os, s, arg, arg->precision, arg->value.p);
   else
      return delegate(os, s, arg, arg->value.p);
}

static int format_p(ostream_t *os, printf_state_t *s, printf_arg_t *arg)
{
   return delegate(os, s, arg, arg->value.p);
}

static int printf_interpret(ostream_t *os, printf_state_t *state,
                            const char *fmt, const char *end)
{
   int nchars = 0;
   for (const char *p = fmt;;) {
      const char *start = p;
      while (p < end && *p != '%' && *p != '$')
         p++;

      if (start < p)
         nchars += ostream_write(os, start, p - start);

      if (p == end)
         return nchars;
      else if (*p == '$') {
         nchars += ansi_escape(os, state, &p);
         continue;
      }
      else if (*p == '%' && *(p + 1) == '%') {
         nchars += ostream_write(os, "%", 1);
         p += 2;
         continue;
      }

      assert(state->pos < state->nargs);

      printf_arg_t *arg = &(state->args[state->pos]);
      nchars += (*arg->fn)(os, state, arg);
      p += arg->len;

      state->pos++;
   }
}

int nvc_vfprintf(ostream_t *os, const char *fmt, va_list ap)
{
   printf_state_t state = {};

   const char *end = NULL;
   for (const char *p = fmt;;) {
      while (*p != '\0' && *p != '%')
         p++;

      if (*p == '\0') {
         end = p;
         break;
      }

      printf_arg_t arg = { .start = p, .precision = INT_MIN };
      bool z_mod = false;
      int l_mod = 0;
   again:
      switch (*++p) {
      case 'l':
         l_mod++;
         goto again;
      case 'z':
         z_mod = true;
         goto again;
      case '-':
      case '+':
      case '.':
      case '0'...'9':
         goto again;
      case '*':
         arg.precision = va_arg(ap, int);
         goto again;
      case 'd':
      case 'i':
      case 'x':
      case 'u':
      case 'o':
         if (z_mod) {
            arg.value.z = va_arg(ap, size_t);
            arg.fn = format_z;
         }
         else if (l_mod >= 2) {
            arg.value.ll = va_arg(ap, long long);
            arg.fn = format_ll;
         }
         else if (l_mod == 1) {
            arg.value.l = va_arg(ap, long);
            arg.fn = format_l;
         }
         else {
            arg.value.i = va_arg(ap, int);
            arg.fn = format_i;
         }
         break;
      case 'c':
         arg.value.i = va_arg(ap, int);
         arg.fn = format_i;
         break;
      case 'e':
      case 'f':
      case 'g':
         arg.value.f = va_arg(ap, double);
         arg.fn = format_f;
         break;
      case 's':
         arg.value.p = va_arg(ap, char *);
         arg.fn = format_s;
         break;
      case 'p':
         arg.value.p = va_arg(ap, void *);
         if ((arg.fn = get_pointer_formatter(p[1])))
            p++;
         else
            arg.fn = format_p;
         break;
      case '%':
         p++;
         continue;
      default:
         fatal_trace("unhandled character '%c' in format", *p);
      }

      arg.len = ++p - arg.start;

      if (state.nargs == MAX_ARGS)
         fatal_trace("maximum of %d printf arguments supported", MAX_ARGS);
      else
         state.args[state.nargs++] = arg;
   }

   return printf_interpret(os, &state, fmt, end);
}

int nvc_vprintf(const char *fmt, va_list ap)
{
   return nvc_vfprintf(nvc_stdout(), fmt, ap);
}

int nvc_printf(const char *fmt, ...)
{
   va_list ap;
   va_start(ap, fmt);
   const int nchars = nvc_vprintf(fmt, ap);
   va_end(ap);
   return nchars;
}

int nvc_fprintf(ostream_t *os, const char *fmt, ...)
{
   va_list ap;
   va_start(ap, fmt);
   const int nchars = nvc_vfprintf(os, fmt, ap);
   va_end(ap);
   return nchars;
}

void stdio_ostream_write(const char *buf, size_t len, void *ctx)
{
   FILE *f = ctx;
   fwrite(buf, len, 1, f);
}

static void init_terminal_ostream(ostream_t *os, FILE *f)
{
   os->callback = stdio_ostream_write;
   os->context = f;
   os->flags = 0;

   const int saved_errno = errno;

   if (isatty(fileno(f))) {
      os->charset = utf8_terminal() ? CHARSET_UTF8 : CHARSET_ISO88591;
      os->flags |= OS_TERMINAL;
   }
   else
      os->charset = CHARSET_ISO88591;

   if (color_terminal())
      os->flags |= OS_COLOR;

   errno = saved_errno;
}

ostream_t *nvc_stdout(void)
{
   static ostream_t os;
   INIT_ONCE(init_terminal_ostream(&os, stdout));
   return &os;
}

ostream_t *nvc_stderr(void)
{
   static ostream_t os;
   INIT_ONCE(init_terminal_ostream(&os, stderr));
   return &os;
}

char *color_asprintf(const char *fmt, ...)
{
   LOCAL_TEXT_BUF tb = tb_new();
   ostream_t os = { tb_ostream_write, tb, CHARSET_ISO88591, OS_COLOR };

   va_list ap;
   va_start(ap, fmt);
   nvc_vfprintf(&os, fmt, ap);
   va_end(ap);

   return tb_claim(tb);
}

1	//
2	// Copyright (C) 2025-2026 Nick Gasson
3	//
4	// This program is free software: you can redistribute it and/or modify
5	// it under the terms of the GNU General Public License as published by
6	// the Free Software Foundation, either version 3 of the License, or
7	// (at your option) any later version.
8	//
9	// This program is distributed in the hope that it will be useful,
10	// but WITHOUT ANY WARRANTY; without even the implied warranty of
11	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12	// GNU General Public License for more details.
13	//
14	// You should have received a copy of the GNU General Public License
15	// along with this program. If not, see <http://www.gnu.org/licenses/>.
16	//
17
18	#include "util.h"
19	#include "ident.h"
20	#include "mir/mir-node.h"
21	#include "object.h"
22	#include "printf.h"
23	#include "thread.h"
24	#include "type.h"
25
26	#include <assert.h>
27	#include <errno.h>
28	#include <stdio.h>
29	#include <string.h>
30	#include <stdlib.h>
31	#include <unistd.h>
32	#include <limits.h>
33
34	#define ANSI_RESET 0
35	#define ANSI_BOLD 1
36	#define ANSI_FG_BLACK 30
37	#define ANSI_FG_RED 31
38	#define ANSI_FG_GREEN 32
39	#define ANSI_FG_YELLOW 33
40	#define ANSI_FG_BLUE 34
41	#define ANSI_FG_MAGENTA 35
42	#define ANSI_FG_CYAN 36
43	#define ANSI_FG_WHITE 37
44
45	#define MAX_ARGS 25
46
47	typedef struct _printf_state printf_state_t;
48	typedef struct _printf_arg printf_arg_t;
49
50	typedef union {
51	long long ll;
52	long l;
53	size_t z;
54	double f;
55	int i;
56	void *p;
57	} printf_value_t;
58
59	typedef int (fmt_fn_t)(ostream_t , printf_state_t , printf_arg_t );
60
61	typedef struct _printf_arg {
62	const char *start;
63	size_t len;
64	fmt_fn_t fn;
65	printf_value_t value;
66	int precision;
67	} printf_arg_t;
68
69	typedef struct _printf_state {
70	printf_arg_t args[MAX_ARGS];
71	unsigned nargs;
72	unsigned pos;
73	} printf_state_t;
74
75	typedef struct {
76	const char *name;
77	int value;
78	} color_escape_t;
79
80	static const color_escape_t escapes[] = {
81	{ "", ANSI_RESET },
82	{ "bold", ANSI_BOLD },
83	{ "black", ANSI_FG_BLACK },
84	{ "red", ANSI_FG_RED },
85	{ "green", ANSI_FG_GREEN },
86	{ "yellow", ANSI_FG_YELLOW },
87	{ "blue", ANSI_FG_BLUE },
88	{ "magenta", ANSI_FG_MAGENTA },
89	{ "cyan", ANSI_FG_CYAN },
90	{ "white", ANSI_FG_WHITE },
91	};
92
93	static int printf_interpret(ostream_t os, printf_state_t state,
94	const char fmt, const char end);
95
96	int ostream_write(ostream_t os, const char buf, size_t len)	2,508,941✔
97	{
98	(*os->callback)(buf, len, os->context);	2,508,941✔
99	return len;	2,508,941✔
100	}
101
102	int ostream_putc(ostream_t *os, char ch)	803,715✔
103	{
104	char buf[1] = { ch };	803,715✔
105	return ostream_write(os, buf, 1);	803,715✔
106	}
107
108	int ostream_puts(ostream_t os, const char str)	11,839✔
109	{
110	if (str == NULL)	11,839✔
111	return ostream_write(os, "(null)", 6);	×
112	else
113	return ostream_write(os, str, strlen(str));	11,839✔
114	}
115
116	static int format_ident(ostream_t os, printf_state_t state, printf_arg_t *arg)	363✔
117	{
118	ident_t id = arg->value.p;	363✔
119	return ostream_write(os, istr(id), ident_len(id));	363✔
120	}
121
122	static int format_ident_toupper(ostream_t os, printf_state_t state,	229✔
123	printf_arg_t *arg)
124	{
125	ident_t id = arg->value.p;	229✔
126	size_t len = ident_len(id);	229✔
127	const char *str = istr(id);	229✔
128	int nchars = 0;	229✔
129	char chunk[32];	229✔
130
131	for (int i = 0; i < len; i += sizeof(chunk)) {	458✔
132	const int tocopy = MIN(sizeof(chunk), len - i);	229✔
133	for (int j = 0; j < tocopy; j++)	1,090✔
134	chunk[j] = toupper_iso88591(str[i + j]);	861✔
135
136	nchars += ostream_write(os, chunk, tocopy);	229✔
137	}
138
139	return nchars;	229✔
140	}
141
142	static int format_type(ostream_t os, printf_state_t state, printf_arg_t *arg)	228✔
143	{
144	type_t type = arg->value.p;	228✔
145
146	// Print a fully qualified name if there is another type in the
147	// argument list with the same simple name
148
149	for (int i = 0; i < state->nargs; i++) {	443✔
150	const printf_arg_t *other = &(state->args[i]);	353✔
151	if (other != arg && other->fn == format_type)	353✔
152	return ostream_puts(os, type_pp2(type, other->value.p));	138✔
153	}
154
155	return ostream_puts(os, type_pp(type));	90✔
156	}
157
158	static int format_object_kind(ostream_t os, printf_state_t state,	×
159	printf_arg_t *arg)
160	{
161	object_t *obj = arg->value.p;	×
162	return ostream_puts(os, object_kind_str(obj));	×
163	}
164
165	static int format_mir(ostream_t os, printf_state_t state, printf_arg_t *arg)	16✔
166	{
167	mir_value_t *value = arg->value.p;	16✔
168	char buf[64];	16✔
169
170	switch (value->tag) {	16✔
171	case MIR_TAG_NODE:	4✔
172	checked_sprintf(buf, sizeof(buf), "%%%d", value->id);	4✔
173	break;	4✔
174	case MIR_TAG_CONST:	12✔
175	checked_sprintf(buf, sizeof(buf), "#%d",	12✔
176	value->id - (1 << (_MIR_ID_BITS - 1)));	12✔
177	break;	12✔
178	default:	×
179	checked_sprintf(buf, sizeof(buf), "{tag:%d, id:%x}",	×
180	value->tag, value->id);	×
181	break;	×
182	}
183
184	return ostream_puts(os, buf);	16✔
185	}
186
187	static int delegate(ostream_t os, printf_state_t s, printf_arg_t *arg, ...)	849,442✔
188	{
189	char spec[32];	849,442✔
190	assert(arg->len + 1 < sizeof(spec));	849,442✔
191	memcpy(spec, arg->start, arg->len);	849,442✔
192	spec[arg->len] = '\0';	849,442✔
193
194	va_list ap, ap2;	849,442✔
195	va_start(ap, arg);	849,442✔
196	va_copy(ap2, ap);	849,442✔
197
198	char small[64];	849,442✔
199	int req = vsnprintf(small, sizeof(small), spec, ap);	849,442✔
200
201	if (req + 1 > sizeof(small)) {	849,442✔
202	char *large = xmalloc(req + 1);	872✔
203	vsnprintf(large, req + 1, spec, ap2);	872✔
204	ostream_write(os, large, req);	872✔
205	free(large);	872✔
206	}
207	else
208	ostream_write(os, small, req);	848,570✔
209
210	va_end(ap);	849,442✔
211	va_end(ap2);	849,442✔
212	return req;	849,442✔
213	}
214
215	static fmt_fn_t get_pointer_formatter(char ch)	841✔
216	{
217	switch (ch) {	841✔
218	case 'i': return format_ident;
219	case 'I': return format_ident_toupper;	229✔
220	case 'T': return format_type;	228✔
221	case 'K': return format_object_kind;	×
222	case 'M': return format_mir;	16✔
223	default: return NULL;	5✔
224	}
225	}
226
227	static int ansi_escape(ostream_t os, printf_state_t state, const char **fmt)	205,727✔
228	{
229	bool has_format = false;	205,727✔
230	const char start = fmt;	205,727✔
231	do {	1,082,101✔
232	has_format \|= (**fmt == '%');	1,082,101✔
233	(*fmt)++;	1,082,101✔
234	} while (fmt != '\0' && fmt != '$');	1,082,101✔
235
236	if (**fmt == '\0')	205,727✔
237	return ostream_write(os, start, *fmt - start);	157✔
238
239	const char end = fmt;	205,570✔
240	(*fmt)++; // Advance past final '$'	205,570✔
241
242	size_t len = len = *fmt - start - 2;	205,570✔
243	const char *e = e = start + 1;	205,570✔
244	LOCAL_TEXT_BUF tb = NULL;	411,140✔
245
246	if (has_format) {	205,570✔
247	// Expand any embedded formatting inside the ANSI escape
248	tb = tb_new();	22,234✔
249
250	ostream_t aos = {	22,234✔
251	tb_ostream_write,
252	tb,
253	os->charset,	22,234✔
254	};
255
256	printf_interpret(&aos, state, start + 1, end);	22,234✔
257
258	e = tb_get(tb);	22,234✔
259	len = tb_len(tb);	22,234✔
260	}
261
262	bool bold;	205,570✔
263	if ((bold = (*e == '!')))	205,570✔
264	++e, --len;	2✔
265
266	bool bright;	205,570✔
267	if ((bright = (*e == '+')))	205,570✔
268	++e, --len;	39✔
269
270	if (*e == '#') {	205,570✔
271	char *eptr;	1✔
272	int code = strtoul(e + 1, &eptr, 10);	1✔
273	if (eptr == e + len) {	1✔
274	char buf[16];	1✔
275	if (bold)	1✔
276	checked_sprintf(buf, sizeof(buf), "\033[1;38;5;%dm", code);	×
277	else
278	checked_sprintf(buf, sizeof(buf), "\033[38;5;%dm", code);	1✔
279
280	if (os->flags & OS_COLOR)	1✔
281	ostream_puts(os, buf);	1✔
282
283	return 0;	1✔
284	}
285	}
286
287	if (strncmp(e, "link:", 5) == 0) {	205,569✔
288	const char *bel = strchr(e, '\07');	22,235✔
289
290	#ifndef __MINGW32__ // Winpty doesn't recognise these
291	if (os->flags & OS_TERMINAL) {	22,235✔
292	ostream_puts(os, "\033]8;;");	2✔
293	ostream_write(os, e + 5, len - 5);	2✔
294	ostream_puts(os, "\033]8;;\07");	2✔
295	return e + len - bel - 1;	2✔
296	}
297	#endif
298
299	return ostream_write(os, bel + 1, e + len - bel - 1);	22,233✔
300	}
301
302	for (int i = 0; i < ARRAY_LEN(escapes); i++) {	693,098✔
303	if (strncmp(e, escapes[i].name, len) == 0) {	693,096✔
304	int code = escapes[i].value + (bright ? 60 : 0);	183,332✔
305	char buf[16];	183,332✔
306	if (bold)	183,332✔
307	checked_sprintf(buf, sizeof(buf), "\033[1;%dm", code);	1✔
308	else
309	checked_sprintf(buf, sizeof(buf), "\033[%dm", code);	183,331✔
310
311	if (os->flags & OS_COLOR)	183,332✔
312	ostream_puts(os, buf);	1,839✔
313
314	return 0;	183,332✔
315	}
316	}
317
318	return ostream_write(os, start, *fmt - start);	2✔
319	}
320
321	static int format_z(ostream_t os, printf_state_t s, printf_arg_t *arg)	149,387✔
322	{
323	assert(arg->precision == INT_MIN);	149,387✔
324	return delegate(os, s, arg, arg->value.z);	149,387✔
325	}
326
327	static int format_ll(ostream_t os, printf_state_t s, printf_arg_t *arg)	×
328	{
329	if (arg->precision != INT_MIN)	×
330	return delegate(os, s, arg, arg->precision, arg->value.ll);	×
331	else
332	return delegate(os, s, arg, arg->value.ll);	×
333	}
334
335	static int format_l(ostream_t os, printf_state_t s, printf_arg_t *arg)	45,442✔
336	{
337	if (arg->precision != INT_MIN)	45,442✔
338	return delegate(os, s, arg, arg->precision, arg->value.l);	11,082✔
339	else
340	return delegate(os, s, arg, arg->value.l);	34,360✔
341	}
342
343	static int format_i(ostream_t os, printf_state_t s, printf_arg_t *arg)	124,756✔
344	{
345	if (arg->precision != INT_MIN)	124,756✔
346	return delegate(os, s, arg, arg->precision, arg->value.i);	13,700✔
347	else
348	return delegate(os, s, arg, arg->value.i);	111,056✔
349	}
350
351	static int format_f(ostream_t os, printf_state_t s, printf_arg_t *arg)	890✔
352	{
353	if (arg->precision != INT_MIN)	890✔
354	return delegate(os, s, arg, arg->precision, arg->value.f);	9✔
355	else
356	return delegate(os, s, arg, arg->value.f);	881✔
357	}
358
359	static int format_s(ostream_t os, printf_state_t s, printf_arg_t *arg)	528,962✔
360	{
361	if (arg->precision != INT_MIN)	528,962✔
362	return delegate(os, s, arg, arg->precision, arg->value.p);	55,577✔
363	else
364	return delegate(os, s, arg, arg->value.p);	473,385✔
365	}
366
367	static int format_p(ostream_t os, printf_state_t s, printf_arg_t *arg)	5✔
368	{
369	return delegate(os, s, arg, arg->value.p);	5✔
370	}
371
372	static int printf_interpret(ostream_t os, printf_state_t state,	669,533✔
373	const char fmt, const char end)
374	{
375	int nchars = 0;	669,533✔
376	for (const char *p = fmt;;) {	669,533✔
377	const char *start = p;	1,770,700✔
378	while (p < end && p != '%' && p != '$')	4,624,882✔
379	p++;	2,854,182✔
380
381	if (start < p)	1,770,700✔
382	nchars += ostream_write(os, start, p - start);	744,944✔
383
384	if (p == end)	1,770,700✔
385	return nchars;	669,533✔
386	else if (*p == '$') {	1,101,167✔
387	nchars += ansi_escape(os, state, &p);	205,727✔
388	continue;	205,727✔
389	}
390	else if (p == '%' && (p + 1) == '%') {	895,440✔
391	nchars += ostream_write(os, "%", 1);	45,162✔
392	p += 2;	45,162✔
393	continue;	45,162✔
394	}
395
396	assert(state->pos < state->nargs);	850,278✔
397
398	printf_arg_t *arg = &(state->args[state->pos]);	850,278✔
399	nchars += (*arg->fn)(os, state, arg);	850,278✔
400	p += arg->len;	850,278✔
401
402	state->pos++;	850,278✔
403	}
404	}
405
406	int nvc_vfprintf(ostream_t os, const char fmt, va_list ap)	647,299✔
407	{
408	printf_state_t state = {};	647,299✔
409
410	const char *end = NULL;	647,299✔
411	for (const char *p = fmt;;) {	647,299✔
412	while (p != '\0' && p != '%')	5,173,223✔
413	p++;	3,630,484✔
414
415	if (*p == '\0') {	1,542,739✔
416	end = p;	647,299✔
417	break;	647,299✔
418	}
419
420	printf_arg_t arg = { .start = p, .precision = INT_MIN };	895,440✔
421	bool z_mod = false;	895,440✔
422	int l_mod = 0;	895,440✔
423	again:	1,198,039✔
424	switch (*++p) {	1,198,039✔
425	case 'l':	45,444✔
426	l_mod++;	45,444✔
427	goto again;	45,444✔
428	case 'z':	149,387✔
429	z_mod = true;	149,387✔
430	goto again;	149,387✔
431	case '-':	27,400✔
432	case '+':
433	case '.':
434	case '0'...'9':
435	goto again;	27,400✔
436	case '*':	80,368✔
437	arg.precision = va_arg(ap, int);	80,368✔
438	goto again;	80,368✔
439	case 'd':	318,103✔
440	case 'i':
441	case 'x':
442	case 'u':
443	case 'o':
444	if (z_mod) {	318,103✔
445	arg.value.z = va_arg(ap, size_t);	149,387✔
446	arg.fn = format_z;	149,387✔
447	}
448	else if (l_mod >= 2) {	168,716✔
449	arg.value.ll = va_arg(ap, long long);	×
450	arg.fn = format_ll;	×
451	}
452	else if (l_mod == 1) {	168,716✔
453	arg.value.l = va_arg(ap, long);	45,442✔
454	arg.fn = format_l;	45,442✔
455	}
456	else {
457	arg.value.i = va_arg(ap, int);	123,274✔
458	arg.fn = format_i;	123,274✔
459	}
460	break;
461	case 'c':	1,482✔
462	arg.value.i = va_arg(ap, int);	1,482✔
463	arg.fn = format_i;	1,482✔
464	break;	1,482✔
465	case 'e':	890✔
466	case 'f':
467	case 'g':
468	arg.value.f = va_arg(ap, double);	890✔
469	arg.fn = format_f;	890✔
470	break;	890✔
471	case 's':	528,962✔
472	arg.value.p = va_arg(ap, char *);	528,962✔
473	arg.fn = format_s;	528,962✔
474	break;	528,962✔
475	case 'p':	841✔
476	arg.value.p = va_arg(ap, void *);	841✔
477	if ((arg.fn = get_pointer_formatter(p[1])))	841✔
478	p++;	836✔
479	else
480	arg.fn = format_p;
481	break;
482	case '%':	45,162✔
483	p++;	45,162✔
484	continue;	45,162✔
485	default:	×
486	fatal_trace("unhandled character '%c' in format", *p);
487	}
488
489	arg.len = ++p - arg.start;	850,278✔
490
491	if (state.nargs == MAX_ARGS)	850,278✔
492	fatal_trace("maximum of %d printf arguments supported", MAX_ARGS);
493	else
494	state.args[state.nargs++] = arg;	850,278✔
495	}
496
497	return printf_interpret(os, &state, fmt, end);	1,294,598✔
498	}
499
500	int nvc_vprintf(const char *fmt, va_list ap)	8✔
501	{
502	return nvc_vfprintf(nvc_stdout(), fmt, ap);	8✔
503	}
504
505	int nvc_printf(const char *fmt, ...)	8✔
506	{
507	va_list ap;	8✔
508	va_start(ap, fmt);	8✔
509	const int nchars = nvc_vprintf(fmt, ap);	8✔
510	va_end(ap);	8✔
511	return nchars;	8✔
512	}
513
514	int nvc_fprintf(ostream_t os, const char fmt, ...)	173,442✔
515	{
516	va_list ap;	173,442✔
517	va_start(ap, fmt);	173,442✔
518	const int nchars = nvc_vfprintf(os, fmt, ap);	173,442✔
519	va_end(ap);	173,442✔
520	return nchars;	173,442✔
521	}
522
523	void stdio_ostream_write(const char buf, size_t len, void ctx)	1,171,858✔
524	{
525	FILE *f = ctx;	1,171,858✔
526	fwrite(buf, len, 1, f);	1,171,858✔
527	}	1,171,858✔
528
529	static void init_terminal_ostream(ostream_t os, FILE f)	4,321✔
530	{
531	os->callback = stdio_ostream_write;	4,321✔
532	os->context = f;	4,321✔
533	os->flags = 0;	4,321✔
534
535	const int saved_errno = errno;	4,321✔
536
537	if (isatty(fileno(f))) {	4,321✔
538	os->charset = utf8_terminal() ? CHARSET_UTF8 : CHARSET_ISO88591;	×
539	os->flags \|= OS_TERMINAL;	×
540	}
541	else
542	os->charset = CHARSET_ISO88591;	4,321✔
543
544	if (color_terminal())	4,321✔
545	os->flags \|= OS_COLOR;	4✔
546
547	errno = saved_errno;	4,321✔
548	}	4,321✔
549
550	ostream_t *nvc_stdout(void)	226✔
551	{
552	static ostream_t os;	226✔
553	INIT_ONCE(init_terminal_ostream(&os, stdout));	226✔
554	return &os;	226✔
555	}
556
557	ostream_t *nvc_stderr(void)	63,760✔
558	{
559	static ostream_t os;	63,760✔
560	INIT_ONCE(init_terminal_ostream(&os, stderr));	63,760✔
561	return &os;	63,760✔
562	}
563
564	char color_asprintf(const char fmt, ...)	31✔
565	{
566	LOCAL_TEXT_BUF tb = tb_new();	62✔
567	ostream_t os = { tb_ostream_write, tb, CHARSET_ISO88591, OS_COLOR };	31✔
568
569	va_list ap;	31✔
570	va_start(ap, fmt);	31✔
571	nvc_vfprintf(&os, fmt, ap);	31✔
572	va_end(ap);	31✔
573
574	return tb_claim(tb);	31✔
575	}

nickg / nvc / 27865744029

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