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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <fset.h>
include <ctype.h>
include "xhelp.h"
# XH_SEARCH -- Given a search pattern generate a list of tasks matching the
# pattern.
procedure xh_search (xh, exact_match, pattern)
pointer xh #i task struct pointer
int exact_match #i require an exact match?
char pattern[ARB] #i search pattern
pointer sp, lfile, line, helpstr, item
pointer tp, lp, pat
char task[SZ_FNAME], pkg[SZ_FNAME], desc[SZ_FNAME]
int i, ip, fd, fdl
long fsize
long fstatl()
int open(), xh_match(), getline(), gstrcpy()
errchk open, xh_updt_quickref
begin
call smark (sp)
call salloc (lfile, SZ_FNAME, TY_CHAR)
call salloc (line, SZ_LINE, TY_CHAR)
call salloc (item, SZ_LINE, TY_CHAR)
call salloc (pat, SZ_FNAME, TY_CHAR)
# Open the quick reference file.
iferr (fd = open (QUICKREF(xh), READ_ONLY, TEXT_FILE))
call error (0, "Cannot open quick-reference file.")
# Open the temp file for the matched lines.
call mktemp ("tmp$xhelpq", Memc[lfile], SZ_FNAME)
fdl = open (Memc[lfile], NEW_FILE, TEXT_FILE)
# Allocate space for the results string.
fsize = fstatl (fd, F_FILESIZE)
# Check pattern for multi-word searches.
call aclrc (Memc[pat], SZ_FNAME)
for (ip=1; IS_WHITE(pattern[ip]); ip=ip+1)
;
if (pattern[ip] == '{') {
ip = ip + 1
for (i=0; pattern[ip] != '}'; ip=ip+1) {
Memc[pat+i] = pattern[ip]
i = i + 1
}
} else
call strcpy (pattern[ip], Memc[pat], SZ_FNAME)
# Loop over the lines in the file and match the pattern.
while (getline(fd,Memc[line]) != EOF) {
if (xh_match (Memc[line], Memc[pat], exact_match) != 0)
call putline (fdl, Memc[line]) # save it to the file
}
call close (fdl)
call close (fd)
# Now read back the file to see if we matched anything, and so we
# can parse the file for task/package names.
fdl = open (Memc[lfile], READ_ONLY, TEXT_FILE)
fsize = fstatl (fdl, F_FILESIZE)
# See whether we got anything, if not return.
if (fsize == 0) {
call sprintf (Memc[line], SZ_LINE,
"No help available for\npattern `%s'.")
call pargstr (Memc[pat])
call gmsg (XH_GP(xh), "alert", Memc[line])
call close (fdl)
call delete (Memc[lfile])
call sfree (sp)
return
}
call calloc (helpstr, 5*fsize, TY_CHAR)
# Read back the sorted list, separate the task name, package, and
# descriptions and format it for the GUI.
tp = helpstr
tp = tp + gstrcpy ("<HTML><BODY><PRE>", Memc[tp], ARB)
while (getline(fdl, Memc[line]) != EOF) {
Memc[item] = EOS
lp = line
# Get the task name.
for (i=1; !IS_WHITE(Memc[lp]); i=i+1) {
task[i] = Memc[lp]
lp = lp + 1
if (Memc[lp] == EOS || i >= SZ_FNAME)
break
}
task[i] = EOS
# Skip delimiter.
while (IS_WHITE(Memc[lp]) || Memc[lp] == '-')
lp = lp + 1
# Get the description up to the '[' package name.
for (i=1; Memc[lp] != '['; i=i+1) {
desc[i] = Memc[lp]
lp = lp + 1
if (Memc[lp] == EOS || i >= SZ_FNAME)
break
}
desc[i] = EOS
# Get the package name up to the ']' delimiter.
if (Memc[lp] != EOS) {
lp = lp + 1
for (i=1; Memc[lp] != ']'; i=i+1) {
pkg[i] = Memc[lp]
lp = lp + 1
if (Memc[lp] == '\n' || Memc[lp] == EOS || i >= SZ_FNAME)
break
}
}
pkg[i] = EOS
call sprintf(Memc[item], SZ_LINE, "<A HREF=%s.%s>%10.10s</A> ")
call pargstr (pkg)
call pargstr (task)
call pargstr (task)
tp = tp + gstrcpy (Memc[item], Memc[tp], ARB)
call sprintf(Memc[item], SZ_LINE, "<A HREF=%s.%s>%10.10s</A> ")
call pargstr (pkg)
call pargstr (pkg)
call pargstr (pkg)
tp = tp + gstrcpy (Memc[item], Memc[tp], ARB)
call sprintf(Memc[item], SZ_LINE, " %s\n")
call pargstr (desc)
tp = tp + gstrcpy (Memc[item], Memc[tp], ARB)
}
call strcat ("</PRE></BODY></HTML>\n", Memc[tp], SZ_LINE)
Memc[tp] = EOS
call close (fdl)
# Send it to the GUI.
call gmsg (XH_GP(xh), "apropos", Memc[helpstr])
# Clean up.
call delete (Memc[lfile])
call mfree (helpstr, TY_CHAR)
call sfree (sp)
end
# XH_MATCH -- Match any or all words in a pattern against the given line.
# We can either look for an exact match or just the occurence of one word
# in the pattern.
int procedure xh_match (line, pattern, exact_match)
char line[ARB] #i line to be matched
char pattern[ARB] #i pattern words
int exact_match
char word[SZ_FNAME]
int i, j
int strsearch()
begin
if (exact_match == YES) {
return (strsearch(line, pattern))
} else {
# See if any word in the pattern matches in the line.
for (i=1; pattern[i] != EOS; i=i+1) {
for (j=1; pattern[i] != EOS && pattern[i] != ' '; j=j+1) {
word[j] = pattern[i]
i = i + 1
}
word[j] = EOS
if (strsearch(line, word) != 0)
return (YES)
}
return (NO)
}
end
|
