1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*******************************************************************/
/* slibtool: a skinny libtool implementation, written in C */
/* Copyright (C) 2016 Z. Gilboa */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <slibtool/slibtool.h>
static const char aclr_reset[] = "\x1b[0m";
static const char aclr_bold[] = "\x1b[1m";
static const char aclr_green[] = "\x1b[32m";
static const char aclr_blue[] = "\x1b[34m";
static const char aclr_magenta[] = "\x1b[35m";
static const char * slbt_output_error_header(const struct slbt_error_info * erri)
{
if (erri->flags & SLBT_ERROR_CHILD)
return "exec error upon";
else if (erri->flags & SLBT_ERROR_TOP_LEVEL)
return "error logged in";
else if (erri->flags & SLBT_ERROR_NESTED)
return "< returned to >";
else
return "distorted state";
}
static const char * slbt_output_strerror(const struct slbt_error_info * erri)
{
if (erri->flags & SLBT_ERROR_CUSTOM)
return "flow error: unexpected condition or other.";
else if (erri->flags & SLBT_ERROR_NESTED)
return "";
else if (erri->flags & SLBT_ERROR_CHILD)
return "(see child process error messages)";
else if (erri->syserror == ENOBUFS)
return "input error: string length exceeds buffer size.";
else
return strerror(erri->syserror);
}
static int slbt_output_error_record_plain(
const struct slbt_driver_ctx * dctx,
const struct slbt_error_info * erri)
{
const char * errdesc = slbt_output_strerror(erri);
if (fprintf(stderr,"%s: %s %s(), line %d%s%s.\n",
dctx->program,
slbt_output_error_header(erri),
erri->function,
erri->line,
strlen(errdesc) ? ": " : "",
errdesc) < 0)
return -1;
return fflush(stderr);
}
static int slbt_output_error_record_annotated(
const struct slbt_driver_ctx * dctx,
const struct slbt_error_info * erri)
{
const char * errdesc = slbt_output_strerror(erri);
if (fprintf(
stderr,
"%s%s%s:%s %s%s%s %s%s%s()%s, %s%sline %d%s%s%s%s%s.\n",
aclr_bold,aclr_magenta,
dctx->program,
aclr_reset,
aclr_bold,
slbt_output_error_header(erri),
aclr_reset,
aclr_bold,aclr_blue,
erri->function,
aclr_reset,
aclr_bold,aclr_green,
erri->line,
aclr_reset,
strlen(errdesc) ? ": " : "",
aclr_bold,
slbt_output_strerror(erri),
aclr_reset) < 0)
return -1;
return fflush(stderr);
}
int slbt_output_error_record(
const struct slbt_driver_ctx * dctx,
const struct slbt_error_info * erri)
{
if (dctx->cctx->drvflags & SLBT_DRIVER_ANNOTATE_NEVER)
return slbt_output_error_record_plain(dctx,erri);
else if (dctx->cctx->drvflags & SLBT_DRIVER_ANNOTATE_ALWAYS)
return slbt_output_error_record_annotated(dctx,erri);
else if (isatty(STDERR_FILENO))
return slbt_output_error_record_annotated(dctx,erri);
else
return slbt_output_error_record_plain(dctx,erri);
}
static int slbt_output_error_vector_plain(const struct slbt_driver_ctx * dctx)
{
struct slbt_error_info ** perr;
for (perr=dctx->errv; *perr; perr++)
if (slbt_output_error_record_plain(dctx,*perr))
return -1;
return 0;
}
static int slbt_output_error_vector_annotated(const struct slbt_driver_ctx * dctx)
{
struct slbt_error_info ** perr;
for (perr=dctx->errv; *perr; perr++)
if (slbt_output_error_record_annotated(dctx,*perr))
return -1;
return 0;
}
int slbt_output_error_vector(const struct slbt_driver_ctx * dctx)
{
if (dctx->cctx->drvflags & SLBT_DRIVER_ANNOTATE_NEVER)
return slbt_output_error_vector_plain(dctx);
else if (dctx->cctx->drvflags & SLBT_DRIVER_ANNOTATE_ALWAYS)
return slbt_output_error_vector_annotated(dctx);
else if (isatty(STDERR_FILENO))
return slbt_output_error_vector_annotated(dctx);
else
return slbt_output_error_vector_plain(dctx);
}
|
