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/****************************************************************************
* bfs *
* Copyright (C) 2019-2022 Tavian Barnes <tavianator@tavianator.com> *
* *
* Permission to use, copy, modify, and/or distribute this software for any *
* purpose with or without fee is hereby granted. *
* *
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES *
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR *
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES *
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN *
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF *
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. *
****************************************************************************/
#include "diag.h"
#include "ctx.h"
#include "color.h"
#include "expr.h"
#include "util.h"
#include <assert.h>
#include <errno.h>
#include <stdarg.h>
void bfs_perror(const struct bfs_ctx *ctx, const char *str) {
bfs_error(ctx, "%s: %m.\n", str);
}
void bfs_error(const struct bfs_ctx *ctx, const char *format, ...) {
va_list args;
va_start(args, format);
bfs_verror(ctx, format, args);
va_end(args);
}
bool bfs_warning(const struct bfs_ctx *ctx, const char *format, ...) {
va_list args;
va_start(args, format);
bool ret = bfs_vwarning(ctx, format, args);
va_end(args);
return ret;
}
bool bfs_debug(const struct bfs_ctx *ctx, enum debug_flags flag, const char *format, ...) {
va_list args;
va_start(args, format);
bool ret = bfs_vdebug(ctx, flag, format, args);
va_end(args);
return ret;
}
void bfs_verror(const struct bfs_ctx *ctx, const char *format, va_list args) {
int error = errno;
bfs_error_prefix(ctx);
errno = error;
cvfprintf(ctx->cerr, format, args);
}
bool bfs_vwarning(const struct bfs_ctx *ctx, const char *format, va_list args) {
int error = errno;
if (bfs_warning_prefix(ctx)) {
errno = error;
cvfprintf(ctx->cerr, format, args);
return true;
} else {
return false;
}
}
bool bfs_vdebug(const struct bfs_ctx *ctx, enum debug_flags flag, const char *format, va_list args) {
int error = errno;
if (bfs_debug_prefix(ctx, flag)) {
errno = error;
cvfprintf(ctx->cerr, format, args);
return true;
} else {
return false;
}
}
void bfs_error_prefix(const struct bfs_ctx *ctx) {
cfprintf(ctx->cerr, "${bld}%s:${rs} ${err}error:${rs} ", xbasename(ctx->argv[0]));
}
bool bfs_warning_prefix(const struct bfs_ctx *ctx) {
if (ctx->warn) {
cfprintf(ctx->cerr, "${bld}%s:${rs} ${wrn}warning:${rs} ", xbasename(ctx->argv[0]));
return true;
} else {
return false;
}
}
bool bfs_debug_prefix(const struct bfs_ctx *ctx, enum debug_flags flag) {
if (ctx->debug & flag) {
cfprintf(ctx->cerr, "${bld}%s:${rs} ${cyn}-D %s${rs}: ", xbasename(ctx->argv[0]), debug_flag_name(flag));
return true;
} else {
return false;
}
}
/** Recursive part of highlight_expr(). */
static bool highlight_expr_recursive(const struct bfs_ctx *ctx, const struct bfs_expr *expr, bool *args) {
if (!expr) {
return false;
}
bool ret = false;
if (!expr->synthetic) {
size_t i = expr->argv - ctx->argv;
for (size_t j = 0; j < expr->argc; ++j) {
assert(i + j < ctx->argc);
args[i + j] = true;
ret = true;
}
}
if (bfs_expr_has_children(expr)) {
ret |= highlight_expr_recursive(ctx, expr->lhs, args);
ret |= highlight_expr_recursive(ctx, expr->rhs, args);
}
return ret;
}
/** Highlight an expression in the command line. */
static bool highlight_expr(const struct bfs_ctx *ctx, const struct bfs_expr *expr, bool *args) {
for (size_t i = 0; i < ctx->argc; ++i) {
args[i] = false;
}
return highlight_expr_recursive(ctx, expr, args);
}
/** Print a highlighted portion of the command line. */
static void bfs_argv_diag(const struct bfs_ctx *ctx, const bool *args, bool warning) {
if (warning) {
bfs_warning_prefix(ctx);
} else {
bfs_error_prefix(ctx);
}
size_t max_argc = 0;
for (size_t i = 0; i < ctx->argc; ++i) {
if (i > 0) {
cfprintf(ctx->cerr, " ");
}
if (args[i]) {
max_argc = i + 1;
cfprintf(ctx->cerr, "${bld}%s${rs}", ctx->argv[i]);
} else {
cfprintf(ctx->cerr, "%s", ctx->argv[i]);
}
}
cfprintf(ctx->cerr, "\n");
if (warning) {
bfs_warning_prefix(ctx);
} else {
bfs_error_prefix(ctx);
}
for (size_t i = 0; i < max_argc; ++i) {
if (i > 0) {
if (args[i - 1] && args[i]) {
cfprintf(ctx->cerr, "~");
} else {
cfprintf(ctx->cerr, " ");
}
}
if (args[i] && (i == 0 || !args[i - 1])) {
if (warning) {
cfprintf(ctx->cerr, "${wrn}");
} else {
cfprintf(ctx->cerr, "${err}");
}
}
size_t len = xstrwidth(ctx->argv[i]);
for (size_t j = 0; j < len; ++j) {
if (args[i]) {
cfprintf(ctx->cerr, "~");
} else {
cfprintf(ctx->cerr, " ");
}
}
if (args[i] && (i + 1 >= max_argc || !args[i + 1])) {
cfprintf(ctx->cerr, "${rs}");
}
}
cfprintf(ctx->cerr, "\n");
}
void bfs_argv_error(const struct bfs_ctx *ctx, const bool *args) {
bfs_argv_diag(ctx, args, false);
}
void bfs_expr_error(const struct bfs_ctx *ctx, const struct bfs_expr *expr) {
bool args[ctx->argc];
if (highlight_expr(ctx, expr, args)) {
bfs_argv_error(ctx, args);
}
}
bool bfs_argv_warning(const struct bfs_ctx *ctx, const bool *args) {
if (!ctx->warn) {
return false;
}
bfs_argv_diag(ctx, args, true);
return true;
}
bool bfs_expr_warning(const struct bfs_ctx *ctx, const struct bfs_expr *expr) {
bool args[ctx->argc];
if (highlight_expr(ctx, expr, args)) {
return bfs_argv_warning(ctx, args);
}
return false;
}
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