30 |
|
idinit.finp = fopen(fname, "rb"); |
31 |
|
|
32 |
|
if (!idinit.finp) { |
33 |
< |
fputs(fname, stderr); |
34 |
< |
fputs(": cannot open for reading\n", stderr); |
33 |
> |
if (hflags & HF_STDERR) { |
34 |
> |
fputs(fname, stderr); |
35 |
> |
fputs(": cannot open for reading\n", stderr); |
36 |
> |
} |
37 |
|
return NULL; |
38 |
|
} |
39 |
|
SET_FILE_BINARY(idinit.finp); |
44 |
|
gotfmt = checkheader(idinit.finp, infmt, |
45 |
|
(hflags & HF_HEADOUT) ? stdout : (FILE *)NULL); |
46 |
|
if (gotfmt <= 0) { |
47 |
< |
fputs(fname, stderr); |
48 |
< |
fputs(": bad or missing header format\n", stderr); |
47 |
> |
if (hflags & HF_STDERR) { |
48 |
> |
fputs(fname, stderr); |
49 |
> |
fputs(": bad or missing header format\n", stderr); |
50 |
> |
} |
51 |
|
fclose(idinit.finp); |
52 |
|
return NULL; |
53 |
|
} |
66 |
|
idinit.bytespi = 3; |
67 |
|
break; |
68 |
|
default: |
69 |
< |
fputs(fname, stderr); |
70 |
< |
fputs(": unsupported index size: ", stderr); |
71 |
< |
fputs(infmt, stderr); |
72 |
< |
fputc('\n', stderr); |
69 |
> |
if (hflags & HF_STDERR) { |
70 |
> |
fputs(fname, stderr); |
71 |
> |
fputs(": unsupported index size: ", stderr); |
72 |
> |
fputs(infmt, stderr); |
73 |
> |
fputc('\n', stderr); |
74 |
> |
} |
75 |
|
fclose(idinit.finp); |
76 |
|
return NULL; |
77 |
|
} |
78 |
|
/* get/copy resolution string */ |
79 |
|
if (!fgetsresolu(&idinit.res, idinit.finp)) { |
80 |
< |
fputs(fname, stderr); |
81 |
< |
fputs(": missing map resolution\n", stderr); |
80 |
> |
if (hflags & HF_STDERR) { |
81 |
> |
fputs(fname, stderr); |
82 |
> |
fputs(": missing map resolution\n", stderr); |
83 |
> |
} |
84 |
|
fclose(idinit.finp); |
85 |
|
return NULL; |
86 |
|
} |
93 |
|
tablength = ftell(idinit.finp) - idinit.dstart - |
94 |
|
(long)idinit.res.xr*idinit.res.yr*idinit.bytespi; |
95 |
|
if (tablength < 2) { |
96 |
< |
fputs(fname, stderr); |
97 |
< |
fputs(": truncated file\n", stderr); |
96 |
> |
if (hflags & HF_STDERR) { |
97 |
> |
fputs(fname, stderr); |
98 |
> |
fputs(": truncated file\n", stderr); |
99 |
> |
} |
100 |
|
fclose(idinit.finp); |
101 |
|
return NULL; |
102 |
|
} |
103 |
|
/* allocate and load table */ |
104 |
|
idmp = (IDMAP *)malloc(sizeof(IDMAP)+tablength); |
105 |
|
if (idmp == NULL) { |
106 |
< |
fputs("Out of memory allocating ID table!\n", stderr); |
106 |
> |
if (hflags & HF_STDERR) |
107 |
> |
fputs("Out of memory allocating ID table!\n", stderr); |
108 |
|
fclose(idinit.finp); |
109 |
|
return NULL; |
110 |
|
} |
113 |
|
if (fseek(idmp->finp, -tablength, SEEK_END) < 0) |
114 |
|
goto seekerr; |
115 |
|
if (fread(idmp->idtable, 1, tablength, idmp->finp) != tablength) { |
116 |
< |
fputs(fname, stderr); |
117 |
< |
fputs(": error reading identifier table\n", stderr); |
116 |
> |
if (hflags & HF_STDERR) { |
117 |
> |
fputs(fname, stderr); |
118 |
> |
fputs(": error reading identifier table\n", stderr); |
119 |
> |
} |
120 |
|
fclose(idmp->finp); |
121 |
|
free(idmp); |
122 |
|
return NULL; |
123 |
|
} |
124 |
< |
if (fseek(idmp->finp, idmp->curpos = idmp->dstart, SEEK_SET) < 0) |
124 |
> |
if (fseek(idmp->finp, idmp->dstart, SEEK_SET) < 0) |
125 |
|
goto seekerr; |
126 |
|
while (tablength > 0) /* create index */ |
127 |
|
idmp->nids += !idmp->idtable[--tablength]; |
128 |
|
idmp->idoffset = (int *)malloc(sizeof(int)*idmp->nids); |
129 |
|
if (!idmp->idoffset) { |
130 |
< |
fputs("Out of memory in idmap_ropen!\n", stderr); |
130 |
> |
if (hflags & HF_STDERR) |
131 |
> |
fputs("Out of memory in idmap_ropen!\n", stderr); |
132 |
|
fclose(idmp->finp); |
133 |
|
free(idmp); |
134 |
|
return NULL; |
140 |
|
} |
141 |
|
return idmp; |
142 |
|
seekerr: |
143 |
< |
fputs(fname, stderr); |
144 |
< |
fputs(": cannot seek on file\n", stderr); |
143 |
> |
if (hflags & HF_STDERR) { |
144 |
> |
fputs(fname, stderr); |
145 |
> |
fputs(": cannot seek on file\n", stderr); |
146 |
> |
} |
147 |
|
fclose(idinit.finp); |
148 |
|
if (idmp) free(idmp); |
149 |
|
return NULL; |
159 |
|
if (ndx == EOF && feof(idmp->finp)) |
160 |
|
return -1; |
161 |
|
|
146 |
– |
idmp->curpos += idmp->bytespi; |
147 |
– |
|
162 |
|
ndx &= (1<<(idmp->bytespi<<3)) - 1; /* undo sign extension */ |
163 |
|
|
164 |
|
return ndx; |
182 |
|
int |
183 |
|
idmap_seek(IDMAP *idmp, int x, int y) |
184 |
|
{ |
171 |
– |
long seekto; |
172 |
– |
|
185 |
|
if ((x < 0) | (y < 0) | (x >= idmp->res.xr) | (y >= idmp->res.yr)) |
186 |
|
return 0; |
187 |
|
|
188 |
< |
seekto = idmp->dstart + ((long)y*idmp->res.xr + x)*idmp->bytespi; |
189 |
< |
|
178 |
< |
if (seekto != idmp->curpos && fseek(idmp->finp, seekto, SEEK_SET) < 0) |
188 |
> |
if (fseek(idmp->finp, idmp->dstart + ((long)y*idmp->res.xr + x)*idmp->bytespi, |
189 |
> |
SEEK_SET) < 0) |
190 |
|
return -1; |
191 |
|
|
181 |
– |
idmp->curpos = seekto; |
182 |
– |
|
192 |
|
return 1; |
193 |
|
} |
194 |
|
|