OpenCoverage

readtokens0.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/coreutils/src/gnulib/lib/readtokens0.c
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1/* readtokens0.c -- Read NUL-separated tokens from an input stream.-
2-
3 Copyright (C) 2004, 2006, 2009-2018 Free Software Foundation, Inc.-
4-
5 This program is free software: you can redistribute it and/or modify-
6 it under the terms of the GNU General Public License as published by-
7 the Free Software Foundation; either version 3 of the License, or-
8 (at your option) any later version.-
9-
10 This program is distributed in the hope that it will be useful,-
11 but WITHOUT ANY WARRANTY; without even the implied warranty of-
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the-
13 GNU General Public License for more details.-
14-
15 You should have received a copy of the GNU General Public License-
16 along with this program. If not, see <https://www.gnu.org/licenses/>.-
17-
18 Written by Jim Meyering. */-
19-
20#include <config.h>-
21-
22#include <stdlib.h>-
23-
24#include "readtokens0.h"-
25-
26#define obstack_chunk_alloc malloc-
27#define obstack_chunk_free free-
28-
29void-
30readtokens0_init (struct Tokens *t)-
31{-
32 t->n_tok = 0;-
33 t->tok = NULL;-
34 t->tok_len = NULL;-
35 obstack_init (&t->o_data);-
36 obstack_init (&t->o_tok);-
37 obstack_init (&t->o_tok_len);-
38}
executed 21 times by 2 tests: end of block
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21
39-
40void-
41readtokens0_free (struct Tokens *t)-
42{-
43 obstack_free (&t->o_data, NULL);
never executed: __o->next_free = __o->object_base = (char *) __obj;
executed 11 times by 1 test: _obstack_free (__o, __obj);
Executed by:
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__obj > (void *) __o->chunkDescription
TRUEnever evaluated
FALSEevaluated 11 times by 1 test
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__obj < (void ...o->chunk_limitDescription
TRUEnever evaluated
FALSEnever evaluated
0-11
44 obstack_free (&t->o_tok, NULL);
never executed: __o->next_free = __o->object_base = (char *) __obj;
executed 11 times by 1 test: _obstack_free (__o, __obj);
Executed by:
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__obj > (void *) __o->chunkDescription
TRUEnever evaluated
FALSEevaluated 11 times by 1 test
Evaluated by:
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__obj < (void ...o->chunk_limitDescription
TRUEnever evaluated
FALSEnever evaluated
0-11
45 obstack_free (&t->o_tok_len, NULL);
never executed: __o->next_free = __o->object_base = (char *) __obj;
executed 11 times by 1 test: _obstack_free (__o, __obj);
Executed by:
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__obj > (void *) __o->chunkDescription
TRUEnever evaluated
FALSEevaluated 11 times by 1 test
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__obj < (void ...o->chunk_limitDescription
TRUEnever evaluated
FALSEnever evaluated
0-11
46}
executed 11 times by 1 test: end of block
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11
47-
48/* Finalize (in the obstack_finish sense) the current token-
49 and record its pointer and length. */-
50static void-
51save_token (struct Tokens *t)-
52{-
53 /* Don't count the trailing NUL byte in the length. */-
54 size_t len = obstack_object_size (&t->o_data) - 1;-
55 char const *s = obstack_finish (&t->o_data);
never executed: __o1->maybe_empty_object = 1;
never executed: __o1->next_free = __o1->chunk_limit;
__o1->next_free == __valueDescription
TRUEnever evaluated
FALSEevaluated 28 times by 2 tests
Evaluated by:
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(size_t) (__o1...) __o1->chunk)Description
TRUEnever evaluated
FALSEevaluated 28 times by 2 tests
Evaluated by:
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sizeof (ptrdif...izeof (void *)Description
TRUEnever evaluated
FALSEevaluated 28 times by 2 tests
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sizeof (ptrdif...izeof (void *)Description
TRUEnever evaluated
FALSEevaluated 28 times by 2 tests
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0-28
56 obstack_ptr_grow (&t->o_tok, s);
never executed: _obstack_newchunk (__o, sizeof (void *));
__extension__ ...izeof (void *)Description
TRUEnever evaluated
FALSEevaluated 28 times by 2 tests
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0-28
57 obstack_grow (&t->o_tok_len, &len, sizeof len);
never executed: _obstack_newchunk (__o, __len);
__extension__ ...e); }) < __lenDescription
TRUEnever evaluated
FALSEevaluated 28 times by 2 tests
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0-28
58 t->n_tok++;-
59}
executed 28 times by 2 tests: end of block
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28
60-
61/* Read NUL-separated tokens from stream IN into T until EOF or error.-
62 The final NUL is optional. Always append a NULL pointer to the-
63 resulting list of token pointers, but that pointer isn't counted-
64 via t->n_tok. Return true if successful. */-
65bool-
66readtokens0 (FILE *in, struct Tokens *t)-
67{-
68-
69 while (1)-
70 {-
71 int c = fgetc (in);-
72 if (c == EOF)
c == (-1)Description
TRUEevaluated 21 times by 2 tests
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FALSEevaluated 46 times by 2 tests
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21-46
73 {-
74 size_t len = obstack_object_size (&t->o_data);-
75 /* If the current object has nonzero length, then there-
76 was no NUL byte at EOF -- or maybe there was an error,-
77 in which case, we need to append a NUL byte to our buffer. */-
78 if (len)
lenDescription
TRUEevaluated 6 times by 2 tests
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FALSEevaluated 15 times by 2 tests
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6-15
79 {-
80 obstack_1grow (&t->o_data, '\0');
never executed: _obstack_newchunk (__o, 1);
__extension__ ..._free); }) < 1Description
TRUEnever evaluated
FALSEevaluated 6 times by 2 tests
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0-6
81 save_token (t);-
82 }
executed 6 times by 2 tests: end of block
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6
83-
84 break;
executed 21 times by 2 tests: break;
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21
85 }-
86-
87 obstack_1grow (&t->o_data, c);
never executed: _obstack_newchunk (__o, 1);
__extension__ ..._free); }) < 1Description
TRUEnever evaluated
FALSEevaluated 46 times by 2 tests
Evaluated by:
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0-46
88 if (c == '\0')
c == '\0'Description
TRUEevaluated 22 times by 2 tests
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FALSEevaluated 24 times by 2 tests
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22-24
89 save_token (t);
executed 22 times by 2 tests: save_token (t);
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22
90 }
executed 46 times by 2 tests: end of block
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46
91-
92 /* Add a NULL pointer at the end, in case the caller (like du)-
93 requires an argv-style array of strings. */-
94 obstack_ptr_grow (&t->o_tok, NULL);
never executed: _obstack_newchunk (__o, sizeof (void *));
__extension__ ...izeof (void *)Description
TRUEnever evaluated
FALSEevaluated 21 times by 2 tests
Evaluated by:
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0-21
95-
96 t->tok = obstack_finish (&t->o_tok);
never executed: __o1->maybe_empty_object = 1;
never executed: __o1->next_free = __o1->chunk_limit;
__o1->next_free == __valueDescription
TRUEnever evaluated
FALSEevaluated 21 times by 2 tests
Evaluated by:
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(size_t) (__o1...) __o1->chunk)Description
TRUEnever evaluated
FALSEevaluated 21 times by 2 tests
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sizeof (ptrdif...izeof (void *)Description
TRUEnever evaluated
FALSEevaluated 21 times by 2 tests
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sizeof (ptrdif...izeof (void *)Description
TRUEnever evaluated
FALSEevaluated 21 times by 2 tests
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0-21
97 t->tok_len = obstack_finish (&t->o_tok_len);
executed 3 times by 2 tests: __o1->maybe_empty_object = 1;
Executed by:
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never executed: __o1->next_free = __o1->chunk_limit;
__o1->next_free == __valueDescription
TRUEevaluated 3 times by 2 tests
Evaluated by:
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FALSEevaluated 18 times by 2 tests
Evaluated by:
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(size_t) (__o1...) __o1->chunk)Description
TRUEnever evaluated
FALSEevaluated 21 times by 2 tests
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sizeof (ptrdif...izeof (void *)Description
TRUEnever evaluated
FALSEevaluated 21 times by 2 tests
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sizeof (ptrdif...izeof (void *)Description
TRUEnever evaluated
FALSEevaluated 21 times by 2 tests
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0-21
98 return ! ferror (in);
executed 21 times by 2 tests: return ! ferror (in);
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21
99}-
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