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author | Aidan MacDonald <amachronic@protonmail.com> | 2021-11-28 13:23:38 +0000 |
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committer | Aidan MacDonald <amachronic@protonmail.com> | 2021-11-28 13:55:48 +0000 |
commit | 4879891da3f5aad8ca525f97be56b780b7df7af9 (patch) | |
tree | 10f15837bcd6d2c7a2029c4962bd3f7aacc86721 /lib/x1000-installer | |
parent | 420d545018dbb21956b4c441b42c7e4803d95a1d (diff) | |
download | rockbox-4879891da3f5aad8ca525f97be56b780b7df7af9.tar.gz rockbox-4879891da3f5aad8ca525f97be56b780b7df7af9.zip |
x1000-installer: xf_stream_read_lines bugfixes
- Only treat EOF as newline if the line is non-empty to
suppress a useless empty line after the end of a file.
- Deal with 0- and 1-byte line buffers safely.
- Remove whitespace stripping and comment handling which
was left over from refactoring. Move it to xf_map_parse()
where it belongs.
Change-Id: I9f05f4e18ca6dd011ca4cd231f0b5ea37c784778
Diffstat (limited to 'lib/x1000-installer')
-rw-r--r-- | lib/x1000-installer/src/xf_flashmap.c | 4 | ||||
-rw-r--r-- | lib/x1000-installer/src/xf_stream.c | 19 |
2 files changed, 12 insertions, 11 deletions
diff --git a/lib/x1000-installer/src/xf_flashmap.c b/lib/x1000-installer/src/xf_flashmap.c index 75cd3c5905..2cde0f1c20 100644 --- a/lib/x1000-installer/src/xf_flashmap.c +++ b/lib/x1000-installer/src/xf_flashmap.c | |||
@@ -193,6 +193,10 @@ int map_parse_line_cb(int n, char* buf, void* arg) | |||
193 | 193 | ||
194 | struct map_parse_args* args = arg; | 194 | struct map_parse_args* args = arg; |
195 | 195 | ||
196 | /* skip whitespace */ | ||
197 | while(*buf && isspace(*buf)) | ||
198 | ++buf; | ||
199 | |||
196 | /* ignore comments and blank lines */ | 200 | /* ignore comments and blank lines */ |
197 | if(*buf == '#' || *buf == '\0') | 201 | if(*buf == '#' || *buf == '\0') |
198 | return 0; | 202 | return 0; |
diff --git a/lib/x1000-installer/src/xf_stream.c b/lib/x1000-installer/src/xf_stream.c index 5a0f86123c..b6391b2c8d 100644 --- a/lib/x1000-installer/src/xf_stream.c +++ b/lib/x1000-installer/src/xf_stream.c | |||
@@ -159,6 +159,9 @@ int xf_stream_read_lines(struct xf_stream* s, char* buf, size_t bufsz, | |||
159 | size_t pos = 0; | 159 | size_t pos = 0; |
160 | bool at_eof = false; | 160 | bool at_eof = false; |
161 | 161 | ||
162 | if(bufsz <= 1) | ||
163 | return XF_E_LINE_TOO_LONG; | ||
164 | |||
162 | while(!at_eof) { | 165 | while(!at_eof) { |
163 | bytes_read = xf_stream_read(s, &buf[pos], bufsz - pos - 1); | 166 | bytes_read = xf_stream_read(s, &buf[pos], bufsz - pos - 1); |
164 | if(bytes_read < 0) | 167 | if(bytes_read < 0) |
@@ -183,20 +186,14 @@ int xf_stream_read_lines(struct xf_stream* s, char* buf, size_t bufsz, | |||
183 | else | 186 | else |
184 | break; /* read ahead to look for newline */ | 187 | break; /* read ahead to look for newline */ |
185 | } else { | 188 | } else { |
186 | endp = &buf[pos]; /* treat EOF as a newline */ | 189 | if(startp == &buf[pos]) |
190 | break; /* nothing left to do */ | ||
191 | else | ||
192 | endp = &buf[pos]; /* last line missing a newline - | ||
193 | * treat EOF as newline */ | ||
187 | } | 194 | } |
188 | } | 195 | } |
189 | 196 | ||
190 | /* skip whitespace */ | ||
191 | while(*startp && isspace(*startp)) | ||
192 | ++startp; | ||
193 | |||
194 | /* ignore blank lines and comment lines */ | ||
195 | if(*startp == '#' || *startp == '\0') { | ||
196 | startp = endp + 1; | ||
197 | continue; | ||
198 | } | ||
199 | |||
200 | rc = callback(n++, startp, arg); | 197 | rc = callback(n++, startp, arg); |
201 | if(rc != 0) | 198 | if(rc != 0) |
202 | return rc; | 199 | return rc; |