Commit | Line | Data |
---|---|---|
362b077f C |
1 | |
2 | ||
3 | ||
4 | UNIFDEF(1) UNIX Programmer's Manual UNIFDEF(1) | |
5 | ||
6 | ||
7 | ||
8 | N\bNA\bAM\bME\bE | |
9 | unifdef - remove ifdef'ed lines | |
10 | ||
11 | S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS | |
12 | u\bun\bni\bif\bfd\bde\bef\bf [ -\b-t\bt -\b-l\bl -\b-c\bc -\b-D\bD_\bs_\by_\bm -\b-U\bU_\bs_\by_\bm -\b-i\bid\bd_\bs_\by_\bm -\b-i\biu\bu_\bs_\by_\bm ] ... [ file ] | |
13 | ||
14 | D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN | |
15 | _\bU_\bn_\bi_\bf_\bd_\be_\bf is useful for removing ifdef'ed lines from a file | |
16 | while otherwise leaving the file alone. _\bU_\bn_\bi_\bf_\bd_\be_\bf is like a | |
17 | stripped-down C preprocessor: it is smart enough to deal | |
18 | with the nested ifdefs, comments, single and double quotes | |
19 | of C syntax so that it can do its job, but it doesn't do any | |
20 | including or interpretation of macros. Neither does it | |
21 | strip out comments, though it recognizes and ignores them. | |
22 | You specify which symbols you want defined -\b-D\bD_\bs_\by_\bm or unde- | |
23 | fined -\b-U\bU_\bs_\by_\bm and the lines inside those ifdefs will be copied | |
24 | to the output or removed as appropriate. The ifdef, ifndef, | |
25 | else, and endif lines associated with _\bs_\by_\bm will also be | |
26 | removed. Ifdefs involving symbols you don't specify are | |
27 | untouched and copied out along with their associated ifdef, | |
28 | else, and endif lines. If an ifdef X occurs nested inside | |
29 | another ifdef X, then the inside ifdef is treated as if it | |
30 | were an unrecognized symbol. If the same symbol appears in | |
31 | more than one argument, only the first occurrence is signi- | |
32 | ficant. | |
33 | ||
34 | The -\b-l\bl option causes _\bu_\bn_\bi_\bf_\bd_\be_\bf to replace removed lines with | |
35 | blank lines instead of deleting them. | |
36 | ||
37 | If you use ifdefs to delimit non-C lines, such as comments | |
38 | or code which is under construction, then you must tell | |
39 | _\bu_\bn_\bi_\bf_\bd_\be_\bf which symbols are used for that purpose so that it | |
40 | won't try to parse for quotes and comments in those ifdef'ed | |
41 | lines. You specify that you want the lines inside certain | |
42 | ifdefs to be ignored but copied out with -\b-i\bid\bd_\bs_\by_\bm and -\b-i\biu\bu_\bs_\by_\bm | |
43 | similar to -\b-D\bD_\bs_\by_\bm and -\b-U\bU_\bs_\by_\bm above. | |
44 | ||
45 | If you want to use _\bu_\bn_\bi_\bf_\bd_\be_\bf for plain text (not C code), use | |
46 | the -\b-t\bt option. This makes _\bu_\bn_\bi_\bf_\bd_\be_\bf refrain from attempting | |
47 | to recognize comments and single and double quotes. | |
48 | ||
49 | _\bU_\bn_\bi_\bf_\bd_\be_\bf copies its output to _\bs_\bt_\bd_\bo_\bu_\bt and will take its input | |
50 | from _\bs_\bt_\bd_\bi_\bn if no _\bf_\bi_\bl_\be argument is given. If the -\b-c\bc argument | |
51 | is specified, then the operation of _\bu_\bn_\bi_\bf_\bd_\be_\bf is complemented, | |
52 | i.e. the lines that would have been removed or blanked are | |
53 | retained and vice versa. | |
54 | ||
55 | S\bSE\bEE\bE A\bAL\bLS\bSO\bO | |
56 | diff(1) | |
57 | ||
58 | D\bDI\bIA\bAG\bGN\bNO\bOS\bST\bTI\bIC\bCS\bS | |
59 | Premature EOF, inappropriate else or endif. | |
60 | ||
61 | ||
62 | ||
63 | Printed 7/9/88 April 29, 1985 1 | |
64 | ||
65 | ||
66 | ||
67 | ||
68 | ||
69 | ||
70 | UNIFDEF(1) UNIX Programmer's Manual UNIFDEF(1) | |
71 | ||
72 | ||
73 | ||
74 | Exit status is 0 if output is exact copy of input, 1 if not, | |
75 | 2 if trouble. | |
76 | ||
77 | B\bBU\bUG\bGS\bS | |
78 | Does not know how to deal with _\bc_\bp_\bp consructs such as | |
79 | ||
80 | #if defined(X) || defined(Y) | |
81 | ||
82 | ||
83 | A\bAU\bUT\bTH\bHO\bOR\bR | |
84 | Dave Yost | |
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 | Printed 7/9/88 April 29, 1985 2 | |
130 | ||
131 | ||
132 |