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IABSD.fr/xenocara/xserver/hw/xfree86/parser/scan.c
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- xserver/hw/xfree86/parser/scan.c
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/* * Copyright (c) 1997 Metro Link Incorporated * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Except as contained in this notice, the name of the Metro Link shall not be * used in advertising or otherwise to promote the sale, use or other dealings * in this Software without prior written authorization from Metro Link. * */ /* * Copyright (c) 1997-2003 by The XFree86 Project, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of the copyright holder(s) * and author(s) shall not be used in advertising or otherwise to promote * the sale, use or other dealings in this Software without prior written * authorization from the copyright holder(s) and author(s). */ #ifdef HAVE_XORG_CONFIG_H #include <xorg-config.h> #endif #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <dirent.h> #include <unistd.h> #include <stdarg.h> #include <X11/Xdefs.h> #include <X11/Xfuncproto.h> #include <limits.h> #if !defined(MAXHOSTNAMELEN) #define MAXHOSTNAMELEN 32 #endif /* !MAXHOSTNAMELEN */ /* For PATH_MAX */ #include "misc.h" #include "Configint.h" #include "xf86tokens.h" #define CONFIG_BUF_LEN 1024 #define CONFIG_MAX_FILES 64 static struct { FILE *file; char *path; } configFiles[CONFIG_MAX_FILES]; static const char **builtinConfig = NULL; static int builtinIndex = 0; static int configPos = 0; /* current readers position */ static int configLineNo = 0; /* linenumber */ static char *configBuf, *configRBuf; /* buffer for lines */ static char *configSection = NULL; /* name of current section being parsed */ static int numFiles = 0; /* number of config files */ static int curFileIndex = 0; /* index of current config file */ static int pushToken = LOCK_TOKEN; static int eol_seen = 0; /* private state to handle comments */ LexRec xf86_lex_val; /* * xf86getNextLine -- * * read from the configFiles FILE stream until we encounter a new * line; this is effectively just a big wrapper for fgets(3). * * xf86getToken() assumes that we will read up to the next * newline; we need to grow configBuf and configRBuf as needed to * support that. */ static char * xf86getNextLine(void) { static int configBufLen = CONFIG_BUF_LEN; char *tmpConfigBuf, *tmpConfigRBuf; int c, i, pos = 0, eolFound = 0; char *ret = NULL; /* * reallocate the string if it was grown last time (i.e., is no * longer CONFIG_BUF_LEN); we malloc the new strings first, so * that if either of the mallocs fail, we can fall back on the * existing buffer allocations */ if (configBufLen != CONFIG_BUF_LEN) { tmpConfigBuf = malloc(CONFIG_BUF_LEN); tmpConfigRBuf = malloc(CONFIG_BUF_LEN); if (!tmpConfigBuf || !tmpConfigRBuf) { /* * at least one of the mallocs failed; keep the old buffers * and free any partial allocations */ free(tmpConfigBuf); free(tmpConfigRBuf); } else { /* * malloc succeeded; free the old buffers and use the new * buffers */ configBufLen = CONFIG_BUF_LEN; free(configBuf); free(configRBuf); configBuf = tmpConfigBuf; configRBuf = tmpConfigRBuf; } } /* read in another block of chars */ do { ret = fgets(configBuf + pos, configBufLen - pos - 1, configFiles[curFileIndex].file); if (!ret) { /* * if the file doesn't end in a newline, add one * and trigger another read */ if (pos != 0) { strcpy(&configBuf[pos], "\n"); ret = configBuf; } else break; } /* search for EOL in the new block of chars */ for (i = pos; i < (configBufLen - 1); i++) { c = configBuf[i]; if (c == '\0') break; if ((c == '\n') || (c == '\r')) { eolFound = 1; break; } } /* * if we didn't find EOL, then grow the string and * read in more */ if (!eolFound) { tmpConfigBuf = realloc(configBuf, configBufLen + CONFIG_BUF_LEN); tmpConfigRBuf = realloc(configRBuf, configBufLen + CONFIG_BUF_LEN); if (!tmpConfigBuf || !tmpConfigRBuf) { /* * at least one of the reallocations failed; use the * new allocation that succeeded, but we have to * fallback to the previous configBufLen size and use * the string we have, even though we don't have an * EOL */ if (tmpConfigBuf) configBuf = tmpConfigBuf; if (tmpConfigRBuf) configRBuf = tmpConfigRBuf; break; } else { /* reallocation succeeded */ configBuf = tmpConfigBuf; configRBuf = tmpConfigRBuf; pos = i; configBufLen += CONFIG_BUF_LEN; } } } while (!eolFound); return ret; } static int StringToToken(const char *str, const xf86ConfigSymTabRec * tab) { int i; for (i = 0; tab[i].token != -1; i++) { if (!xf86nameCompare(tab[i].name, str)) return tab[i].token; } return ERROR_TOKEN; } /* * xf86getToken -- * Read next Token from the config file. Handle the global variable * pushToken. */ int xf86getToken(const xf86ConfigSymTabRec * tab) { int c, i; /* * First check whether pushToken has a different value than LOCK_TOKEN. * In this case rBuf[] contains a valid STRING/TOKEN/NUMBER. But in the * oth * case the next token must be read from the input. */ if (pushToken == EOF_TOKEN) return EOF_TOKEN; else if (pushToken == LOCK_TOKEN) { /* * eol_seen is only set for the first token after a newline. */ eol_seen = 0; c = configBuf[configPos]; /* * Get start of next Token. EOF is handled, * whitespaces are skipped. */ again: if (!c) { char *ret; if (numFiles > 0) ret = xf86getNextLine(); else { if (builtinConfig[builtinIndex] == NULL) ret = NULL; else { strlcpy(configBuf, builtinConfig[builtinIndex], CONFIG_BUF_LEN); ret = configBuf; builtinIndex++; } } if (ret == NULL) { /* * if necessary, move to the next file and * read the first line */ if (curFileIndex + 1 < numFiles) { curFileIndex++; configLineNo = 0; goto again; } else return pushToken = EOF_TOKEN; } configLineNo++; configPos = 0; eol_seen = 1; } i = 0; for (;;) { c = configBuf[configPos++]; configRBuf[i++] = c; switch (c) { case ' ': case '\t': case '\r': continue; case '\n': i = 0; continue; } break; } if (c == '\0') goto again; if (c == '#') { do { configRBuf[i++] = (c = configBuf[configPos++]); } while ((c != '\n') && (c != '\r') && (c != '\0')); configRBuf[i] = '\0'; /* XXX private copy. * Use xf86addComment when setting a comment. */ xf86_lex_val.str = strdup(configRBuf); return COMMENT; } /* GJA -- handle '-' and ',' * Be careful: "-hsync" is a keyword. */ else if ((c == ',') && !isalpha(configBuf[configPos])) { return COMMA; } else if ((c == '-') && !isalpha(configBuf[configPos])) { return DASH; } /* * Numbers are returned immediately ... */ if (isdigit(c)) { int base; if (c == '0') if ((configBuf[configPos] == 'x') || (configBuf[configPos] == 'X')) { base = 16; xf86_lex_val.numType = PARSE_HEX; } else { base = 8; xf86_lex_val.numType = PARSE_OCTAL; } else { base = 10; xf86_lex_val.numType = PARSE_DECIMAL; } configRBuf[0] = c; i = 1; while (isdigit(c = configBuf[configPos++]) || (c == '.') || (c == 'x') || (c == 'X') || ((base == 16) && (((c >= 'a') && (c <= 'f')) || ((c >= 'A') && (c <= 'F'))))) configRBuf[i++] = c; configPos--; /* GJA -- one too far */ configRBuf[i] = '\0'; xf86_lex_val.num = strtoul(configRBuf, NULL, 0); xf86_lex_val.realnum = atof(configRBuf); return NUMBER; } /* * All Strings START with a \" ... */ else if (c == '\"') { i = -1; do { configRBuf[++i] = (c = configBuf[configPos++]); } while ((c != '\"') && (c != '\n') && (c != '\r') && (c != '\0')); configRBuf[i] = '\0'; xf86_lex_val.str = malloc(strlen(configRBuf) + 1); strcpy(xf86_lex_val.str, configRBuf); /* private copy ! */ return STRING; } /* * ... and now we MUST have a valid token. The search is * handled later along with the pushed tokens. */ else { configRBuf[0] = c; i = 0; do { configRBuf[++i] = (c = configBuf[configPos++]); } while ((c != ' ') && (c != '\t') && (c != '\n') && (c != '\r') && (c != '\0') && (c != '#')); --configPos; configRBuf[i] = '\0'; i = 0; } } else { /* * Here we deal with pushed tokens. Reinitialize pushToken again. If * the pushed token was NUMBER || STRING return them again ... */ int temp = pushToken; pushToken = LOCK_TOKEN; if (temp == COMMA || temp == DASH) return temp; if (temp == NUMBER || temp == STRING) return temp; } /* * Joop, at last we have to lookup the token ... */ if (tab) return StringToToken(configRBuf, tab); return ERROR_TOKEN; /* Error catcher */ } int xf86getSubToken(char **comment) { int token; for (;;) { token = xf86getToken(NULL); if (token == COMMENT) { if (comment) { *comment = xf86addComment(*comment, xf86_lex_val.str); free(xf86_lex_val.str); xf86_lex_val.str = NULL; } } else return token; } /*NOTREACHED*/} int xf86getSubTokenWithTab(char **comment, const xf86ConfigSymTabRec * tab) { int token; for (;;) { token = xf86getToken(tab); if (token == COMMENT) { if (comment) { *comment = xf86addComment(*comment, xf86_lex_val.str); free(xf86_lex_val.str); xf86_lex_val.str = NULL; } } else return token; } /*NOTREACHED*/} void xf86unGetToken(int token) { pushToken = token; } char * xf86tokenString(void) { return configRBuf; } int xf86pathIsAbsolute(const char *path) { if (path && path[0] == '/') return 1; return 0; } /* A path is "safe" if it is relative and if it contains no ".." elements. */ int xf86pathIsSafe(const char *path) { if (xf86pathIsAbsolute(path)) return 0; /* Compare with ".." */ if (!strcmp(path, "..")) return 0; /* Look for leading "../" */ if (!strncmp(path, "../", 3)) return 0; /* Look for trailing "/.." */ if ((strlen(path) > 3) && !strcmp(path + strlen(path) - 3, "/..")) return 0; /* Look for "/../" */ if (strstr(path, "/../")) return 0; return 1; } /* * This function substitutes the following escape sequences: * * %A cmdline argument as an absolute path (must be absolute to match) * %R cmdline argument as a relative path * %S cmdline argument as a "safe" path (relative, and no ".." elements) * %X default config file name ("xorg.conf") * %H hostname * %E config file environment ($XORGCONFIG) as an absolute path * %F config file environment ($XORGCONFIG) as a relative path * %G config file environment ($XORGCONFIG) as a safe path * %P projroot * %C sysconfdir * %D datadir * %% % */ #define XCONFIGSUFFIX ".conf" #define XCONFENV "XORGCONFIG" #define BAIL_OUT do { \ free(result); \ return NULL; \ } while (0) #define CHECK_LENGTH do { \ if (l > PATH_MAX) { \ BAIL_OUT; \ } \ } while (0) #define APPEND_STR(s) do { \ if (strlen(s) + l > PATH_MAX) { \ BAIL_OUT; \ } else { \ strcpy(result + l, s); \ l += strlen(s); \ } \ } while (0) static char * DoSubstitution(const char *template, const char *cmdline, const char *projroot, int *cmdlineUsed, int *envUsed, const char *XConfigFile) { char *result; int i, l; static const char *env = NULL; static char *hostname = NULL; if (!template) return NULL; if (cmdlineUsed) *cmdlineUsed = 0; if (envUsed) *envUsed = 0; result = malloc(PATH_MAX + 1); l = 0; for (i = 0; template[i]; i++) { if (template[i] != '%') { result[l++] = template[i]; CHECK_LENGTH; } else { switch (template[++i]) { case 'A': if (cmdline && xf86pathIsAbsolute(cmdline)) { APPEND_STR(cmdline); if (cmdlineUsed) *cmdlineUsed = 1; } else BAIL_OUT; break; case 'R': if (cmdline && !xf86pathIsAbsolute(cmdline)) { APPEND_STR(cmdline); if (cmdlineUsed) *cmdlineUsed = 1; } else BAIL_OUT; break; case 'S': if (cmdline && xf86pathIsSafe(cmdline)) { APPEND_STR(cmdline); if (cmdlineUsed) *cmdlineUsed = 1; } else BAIL_OUT; break; case 'X': APPEND_STR(XConfigFile); break; case 'H': if (!hostname) { if ((hostname = malloc(MAXHOSTNAMELEN + 1))) { if (gethostname(hostname, MAXHOSTNAMELEN) == 0) { hostname[MAXHOSTNAMELEN] = '\0'; } else { free(hostname); hostname = NULL; } } } if (hostname) APPEND_STR(hostname); break; case 'E': if (!env) env = getenv(XCONFENV); if (env && xf86pathIsAbsolute(env)) { APPEND_STR(env); if (envUsed) *envUsed = 1; } else BAIL_OUT; break; case 'F': if (!env) env = getenv(XCONFENV); if (env && !xf86pathIsAbsolute(env)) { APPEND_STR(env); if (envUsed) *envUsed = 1; } else BAIL_OUT; break; case 'G': if (!env) env = getenv(XCONFENV); if (env && xf86pathIsSafe(env)) { APPEND_STR(env); if (envUsed) *envUsed = 1; } else BAIL_OUT; break; case 'P': if (projroot && xf86pathIsAbsolute(projroot)) APPEND_STR(projroot); else BAIL_OUT; break; case 'C': APPEND_STR(SYSCONFDIR); break; case 'D': APPEND_STR(DATADIR); break; case '%': result[l++] = '%'; CHECK_LENGTH; break; default: fprintf(stderr, "invalid escape %%%c found in path template\n", template[i]); BAIL_OUT; break; } } } #ifdef DEBUG fprintf(stderr, "Converted `%s' to `%s'\n", template, result); #endif return result; } /* * Given some searching parameters, locate and open the xorg config file. */ static char * OpenConfigFile(const char *path, const char *cmdline, const char *projroot, const char *confname) { char *filepath = NULL; char *pathcopy; const char *template; int cmdlineUsed = 0; FILE *file = NULL; pathcopy = strdup(path); for (template = strtok(pathcopy, ","); template && !file; template = strtok(NULL, ",")) { filepath = DoSubstitution(template, cmdline, projroot, &cmdlineUsed, NULL, confname); if (!filepath) continue; if (cmdline && !cmdlineUsed) { free(filepath); filepath = NULL; continue; } file = fopen(filepath, "r"); if (!file) { free(filepath); filepath = NULL; } } free(pathcopy); if (file) { configFiles[numFiles].file = file; configFiles[numFiles].path = strdup(filepath); numFiles++; } return filepath; } /* * Match non-hidden files in the xorg config directory with a .conf * suffix. This filter is passed to scandir(3). */ static int ConfigFilter(const struct dirent *de) { const char *name = de->d_name; size_t len; size_t suflen = strlen(XCONFIGSUFFIX); if (!name || name[0] == '.') return 0; len = strlen(name); if (len <= suflen) return 0; if (strcmp(&name[len - suflen], XCONFIGSUFFIX) != 0) return 0; return 1; } static Bool AddConfigDirFiles(const char *dirpath, struct dirent **list, int num) { int i; Bool openedFile = FALSE; Bool warnOnce = FALSE; for (i = 0; i < num; i++) { char *path; FILE *file; if (numFiles >= CONFIG_MAX_FILES) { if (!warnOnce) { ErrorF("Maximum number of configuration " "files opened\n"); warnOnce = TRUE; } continue; } path = malloc(PATH_MAX + 1); snprintf(path, PATH_MAX + 1, "%s/%s", dirpath, list[i]->d_name); file = fopen(path, "r"); if (!file) { free(path); continue; } openedFile = TRUE; configFiles[numFiles].file = file; configFiles[numFiles].path = path; numFiles++; } return openedFile; } /* * Given some searching parameters, locate and open the xorg config * directory. The directory does not need to contain config files. */ static char * OpenConfigDir(const char *path, const char *cmdline, const char *projroot, const char *confname) { char *dirpath = NULL, *pathcopy; const char *template; Bool found = FALSE; int cmdlineUsed = 0; pathcopy = strdup(path); for (template = strtok(pathcopy, ","); template && !found; template = strtok(NULL, ",")) { struct dirent **list = NULL; int num; dirpath = DoSubstitution(template, cmdline, projroot, &cmdlineUsed, NULL, confname); if (!dirpath) continue; if (cmdline && !cmdlineUsed) { free(dirpath); dirpath = NULL; continue; } /* match files named *.conf */ num = scandir(dirpath, &list, ConfigFilter, alphasort); if (num < 0) { list = NULL; num = 0; } found = AddConfigDirFiles(dirpath, list, num); if (!found) { free(dirpath); dirpath = NULL; } while (num--) free(list[num]); free(list); } free(pathcopy); return dirpath; } /* * xf86initConfigFiles -- Setup global variables and buffers. */ void xf86initConfigFiles(void) { curFileIndex = 0; configPos = 0; configLineNo = 0; pushToken = LOCK_TOKEN; configBuf = malloc(CONFIG_BUF_LEN); configRBuf = malloc(CONFIG_BUF_LEN); configBuf[0] = '\0'; /* sanity ... */ } /* * xf86openConfigFile -- * * This function take a config file search path (optional), a command-line * specified file name (optional) and the ProjectRoot path (optional) and * locates and opens a config file based on that information. If a * command-line file name is specified, then this function fails if none * of the located files. * * The return value is a pointer to the actual name of the file that was * opened. When no file is found, the return value is NULL. The caller should * free() the returned value. * * The escape sequences allowed in the search path are defined above. * */ #ifndef DEFAULT_CONF_PATH #define DEFAULT_CONF_PATH "/etc/X11/%S," \ "%P/etc/X11/%S," \ "/etc/X11/%G," \ "%P/etc/X11/%G," \ "/etc/X11/%X-%M," \ "/etc/X11/%X," \ "/etc/%X," \ "%P/etc/X11/%X.%H," \ "%P/etc/X11/%X-%M," \ "%P/etc/X11/%X," \ "%P/lib/X11/%X.%H," \ "%P/lib/X11/%X-%M," \ "%P/lib/X11/%X" #endif char * xf86openConfigFile(const char *path, const char *cmdline, const char *projroot) { if (!path || !path[0]) path = DEFAULT_CONF_PATH; if (!projroot || !projroot[0]) projroot = PROJECTROOT; /* Search for a config file */ return OpenConfigFile(path, cmdline, projroot, XCONFIGFILE); } /* * xf86openConfigDirFiles -- * * This function take a config directory search path (optional), a * command-line specified directory name (optional) and the ProjectRoot path * (optional) and locates and opens a config directory based on that * information. If a command-line name is specified, then this function * fails if it is not found. * * The return value is a pointer to the actual name of the directory that was * opened. When no directory is found, the return value is NULL. The caller * should free() the returned value. * * The escape sequences allowed in the search path are defined above. * */ char * xf86openConfigDirFiles(const char *path, const char *cmdline, const char *projroot) { if (!path || !path[0]) path = DEFAULT_CONF_PATH; if (!projroot || !projroot[0]) projroot = PROJECTROOT; /* Search for the multiconf directory */ return OpenConfigDir(path, cmdline, projroot, XCONFIGDIR); } void xf86closeConfigFile(void) { int i; free(configRBuf); configRBuf = NULL; free(configBuf); configBuf = NULL; if (numFiles == 0) { builtinConfig = NULL; builtinIndex = 0; } for (i = 0; i < numFiles; i++) { fclose(configFiles[i].file); configFiles[i].file = NULL; free(configFiles[i].path); configFiles[i].path = NULL; } numFiles = 0; } void xf86setBuiltinConfig(const char *config[]) { builtinConfig = config; } void xf86parseError(const char *format, ...) { va_list ap; const char *filename = numFiles ? configFiles[curFileIndex].path : "<builtin configuration>"; ErrorF("Parse error on line %d of section %s in file %s\n\t", configLineNo, configSection, filename); va_start(ap, format); VErrorF(format, ap); va_end(ap); ErrorF("\n"); } void xf86validationError(const char *format, ...) { va_list ap; const char *filename = numFiles ? configFiles[curFileIndex].path : "<builtin configuration>"; ErrorF("Data incomplete in file %s\n\t", filename); va_start(ap, format); VErrorF(format, ap); va_end(ap); ErrorF("\n"); } void xf86setSection(const char *section) { free(configSection); configSection = strdup(section); } /* * xf86getToken -- * Lookup a string if it is actually a token in disguise. */ int xf86getStringToken(const xf86ConfigSymTabRec * tab) { return StringToToken(xf86_lex_val.str, tab); } /* * Compare two names. The characters '_', ' ', and '\t' are ignored * in the comparison. */ int xf86nameCompare(const char *s1, const char *s2) { char c1, c2; if (!s1 || *s1 == 0) { if (!s2 || *s2 == 0) return 0; else return 1; } else if (!s2 || *s2 == 0) { return -1; } while (*s1 == '_' || *s1 == ' ' || *s1 == '\t') s1++; while (*s2 == '_' || *s2 == ' ' || *s2 == '\t') s2++; c1 = (isupper(*s1) ? tolower(*s1) : *s1); c2 = (isupper(*s2) ? tolower(*s2) : *s2); while (c1 == c2) { if (c1 == '\0') return 0; s1++; s2++; while (*s1 == '_' || *s1 == ' ' || *s1 == '\t') s1++; while (*s2 == '_' || *s2 == ' ' || *s2 == '\t') s2++; c1 = (isupper(*s1) ? tolower(*s1) : *s1); c2 = (isupper(*s2) ? tolower(*s2) : *s2); } return c1 - c2; } char * xf86addComment(char *cur, const char *add) { char *str; const char *cstr; int len, curlen, iscomment, hasnewline = 0, insnewline, endnewline; if (add == NULL || add[0] == '\0') return cur; if (cur) { curlen = strlen(cur); if (curlen) hasnewline = cur[curlen - 1] == '\n'; eol_seen = 0; } else curlen = 0; cstr = add; iscomment = 0; while (*cstr) { if (*cstr != ' ' && *cstr != '\t') break; ++cstr; } iscomment = (*cstr == '#'); len = strlen(add); endnewline = add[len - 1] == '\n'; insnewline = eol_seen || (curlen && !hasnewline); if (insnewline) len++; if (!iscomment) len++; if (!endnewline) len++; /* Allocate + 1 char for '\0' terminator. */ str = realloc(cur, curlen + len + 1); if (!str) return cur; cur = str; if (insnewline) cur[curlen++] = '\n'; if (!iscomment) cur[curlen++] = '#'; strcpy(cur + curlen, add); if (!endnewline) strcat(cur, "\n"); return cur; } Bool xf86getBoolValue(Bool *val, const char *str) { if (!val || !str) return FALSE; if (*str == '\0') { *val = TRUE; } else { if (xf86nameCompare(str, "1") == 0) *val = TRUE; else if (xf86nameCompare(str, "on") == 0) *val = TRUE; else if (xf86nameCompare(str, "true") == 0) *val = TRUE; else if (xf86nameCompare(str, "yes") == 0) *val = TRUE; else if (xf86nameCompare(str, "0") == 0) *val = FALSE; else if (xf86nameCompare(str, "off") == 0) *val = FALSE; else if (xf86nameCompare(str, "false") == 0) *val = FALSE; else if (xf86nameCompare(str, "no") == 0) *val = FALSE; else return FALSE; } return TRUE; }