diff options
author | ZoRo <dos21h@gmail.com> | 2022-02-19 21:51:49 +0000 |
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committer | ZoRo <dos21h@gmail.com> | 2022-02-19 21:51:49 +0000 |
commit | e82d475b7bbb2e3ba0388cad069eedf46f4ae363 (patch) | |
tree | ecccf8000ce8266c6eef1d04e0bc1c1e61a0984c /src | |
download | r820t-utils-e82d475b7bbb2e3ba0388cad069eedf46f4ae363.tar.gz r820t-utils-e82d475b7bbb2e3ba0388cad069eedf46f4ae363.zip |
Initial
Diffstat (limited to 'src')
-rw-r--r-- | src/convenience/convenience.c | 308 | ||||
-rw-r--r-- | src/convenience/convenience.h | 142 | ||||
-rw-r--r-- | src/getopt/getopt.c | 1059 | ||||
-rw-r--r-- | src/getopt/getopt.h | 180 | ||||
-rw-r--r-- | src/make.mk | 15 | ||||
-rw-r--r-- | src/rtl_adsb.c | 507 | ||||
-rw-r--r-- | src/rtl_biast.c | 101 | ||||
-rw-r--r-- | src/rtl_eeprom.c | 426 | ||||
-rw-r--r-- | src/rtl_fm.c | 1289 | ||||
-rw-r--r-- | src/rtl_power.c | 1015 | ||||
-rw-r--r-- | src/rtl_sdr.c | 278 | ||||
-rw-r--r-- | src/rtl_tcp.c | 660 | ||||
-rw-r--r-- | src/rtl_test.c | 457 |
13 files changed, 6437 insertions, 0 deletions
diff --git a/src/convenience/convenience.c b/src/convenience/convenience.c new file mode 100644 index 0000000..00cc2cc --- /dev/null +++ b/src/convenience/convenience.c @@ -0,0 +1,308 @@ +/* + * Copyright (C) 2014 by Kyle Keen <keenerd@gmail.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +/* a collection of user friendly tools + * todo: use strtol for more flexible int parsing + * */ + +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +#ifndef _WIN32 +#include <unistd.h> +#else +#include <windows.h> +#include <fcntl.h> +#include <io.h> +#define _USE_MATH_DEFINES +#endif + +#include <math.h> + +#include "rtl-sdr.h" + +double atofs(char *s) +/* standard suffixes */ +{ + char last; + int len; + double suff = 1.0; + len = strlen(s); + last = s[len-1]; + s[len-1] = '\0'; + switch (last) { + case 'g': + case 'G': + suff *= 1e3; + /* fall-through */ + case 'm': + case 'M': + suff *= 1e3; + /* fall-through */ + case 'k': + case 'K': + suff *= 1e3; + suff *= atof(s); + s[len-1] = last; + return suff; + } + s[len-1] = last; + return atof(s); +} + +double atoft(char *s) +/* time suffixes, returns seconds */ +{ + char last; + int len; + double suff = 1.0; + len = strlen(s); + last = s[len-1]; + s[len-1] = '\0'; + switch (last) { + case 'h': + case 'H': + suff *= 60; + /* fall-through */ + case 'm': + case 'M': + suff *= 60; + /* fall-through */ + case 's': + case 'S': + suff *= atof(s); + s[len-1] = last; + return suff; + } + s[len-1] = last; + return atof(s); +} + +double atofp(char *s) +/* percent suffixes */ +{ + char last; + int len; + double suff = 1.0; + len = strlen(s); + last = s[len-1]; + s[len-1] = '\0'; + switch (last) { + case '%': + suff *= 0.01; + suff *= atof(s); + s[len-1] = last; + return suff; + } + s[len-1] = last; + return atof(s); +} + +int nearest_gain(rtlsdr_dev_t *dev, int target_gain) +{ + int i, r, err1, err2, count, nearest; + int* gains; + r = rtlsdr_set_tuner_gain_mode(dev, 1); + if (r < 0) { + fprintf(stderr, "WARNING: Failed to enable manual gain.\n"); + return r; + } + count = rtlsdr_get_tuner_gains(dev, NULL); + if (count <= 0) { + return 0; + } + gains = malloc(sizeof(int) * count); + count = rtlsdr_get_tuner_gains(dev, gains); + nearest = gains[0]; + for (i=0; i<count; i++) { + err1 = abs(target_gain - nearest); + err2 = abs(target_gain - gains[i]); + if (err2 < err1) { + nearest = gains[i]; + } + } + free(gains); + return nearest; +} + +int verbose_set_frequency(rtlsdr_dev_t *dev, uint32_t frequency) +{ + int r; + r = rtlsdr_set_center_freq(dev, frequency); + if (r < 0) { + fprintf(stderr, "WARNING: Failed to set center freq.\n"); + } else { + fprintf(stderr, "Tuned to %u Hz.\n", frequency); + } + return r; +} + +int verbose_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate) +{ + int r; + r = rtlsdr_set_sample_rate(dev, samp_rate); + if (r < 0) { + fprintf(stderr, "WARNING: Failed to set sample rate.\n"); + } else { + fprintf(stderr, "Sampling at %u S/s.\n", samp_rate); + } + return r; +} + +int verbose_direct_sampling(rtlsdr_dev_t *dev, int on) +{ + int r; + r = rtlsdr_set_direct_sampling(dev, on); + if (r != 0) { + fprintf(stderr, "WARNING: Failed to set direct sampling mode.\n"); + return r; + } + if (on == 0) { + fprintf(stderr, "Direct sampling mode disabled.\n");} + if (on == 1) { + fprintf(stderr, "Enabled direct sampling mode, input 1/I.\n");} + if (on == 2) { + fprintf(stderr, "Enabled direct sampling mode, input 2/Q.\n");} + return r; +} + +int verbose_offset_tuning(rtlsdr_dev_t *dev) +{ + int r; + r = rtlsdr_set_offset_tuning(dev, 1); + if (r != 0) { + fprintf(stderr, "WARNING: Failed to set offset tuning.\n"); + } else { + fprintf(stderr, "Offset tuning mode enabled.\n"); + } + return r; +} + +int verbose_auto_gain(rtlsdr_dev_t *dev) +{ + int r; + r = rtlsdr_set_tuner_gain_mode(dev, 0); + if (r != 0) { + fprintf(stderr, "WARNING: Failed to set tuner gain.\n"); + } else { + fprintf(stderr, "Tuner gain set to automatic.\n"); + } + return r; +} + +int verbose_gain_set(rtlsdr_dev_t *dev, int gain) +{ + int r; + r = rtlsdr_set_tuner_gain_mode(dev, 1); + if (r < 0) { + fprintf(stderr, "WARNING: Failed to enable manual gain.\n"); + return r; + } + r = rtlsdr_set_tuner_gain(dev, gain); + if (r != 0) { + fprintf(stderr, "WARNING: Failed to set tuner gain.\n"); + } else { + fprintf(stderr, "Tuner gain set to %0.2f dB.\n", gain/10.0); + } + return r; +} + +int verbose_ppm_set(rtlsdr_dev_t *dev, int ppm_error) +{ + int r; + if (ppm_error == 0) { + return 0;} + r = rtlsdr_set_freq_correction(dev, ppm_error); + if (r < 0) { + fprintf(stderr, "WARNING: Failed to set ppm error.\n"); + } else { + fprintf(stderr, "Tuner error set to %i ppm.\n", ppm_error); + } + return r; +} + +int verbose_reset_buffer(rtlsdr_dev_t *dev) +{ + int r; + r = rtlsdr_reset_buffer(dev); + if (r < 0) { + fprintf(stderr, "WARNING: Failed to reset buffers.\n");} + return r; +} + +int verbose_device_search(char *s) +{ + int i, device_count, device, offset; + char *s2; + char vendor[256], product[256], serial[256]; + device_count = rtlsdr_get_device_count(); + if (!device_count) { + fprintf(stderr, "No supported devices found.\n"); + return -1; + } + fprintf(stderr, "Found %d device(s):\n", device_count); + for (i = 0; i < device_count; i++) { + rtlsdr_get_device_usb_strings(i, vendor, product, serial); + fprintf(stderr, " %d: %s, %s, SN: %s\n", i, vendor, product, serial); + } + fprintf(stderr, "\n"); + /* does string look like raw id number */ + device = (int)strtol(s, &s2, 0); + if (s2[0] == '\0' && device >= 0 && device < device_count) { + fprintf(stderr, "Using device %d: %s\n", + device, rtlsdr_get_device_name((uint32_t)device)); + return device; + } + /* does string exact match a serial */ + for (i = 0; i < device_count; i++) { + rtlsdr_get_device_usb_strings(i, vendor, product, serial); + if (strcmp(s, serial) != 0) { + continue;} + device = i; + fprintf(stderr, "Using device %d: %s\n", + device, rtlsdr_get_device_name((uint32_t)device)); + return device; + } + /* does string prefix match a serial */ + for (i = 0; i < device_count; i++) { + rtlsdr_get_device_usb_strings(i, vendor, product, serial); + if (strncmp(s, serial, strlen(s)) != 0) { + continue;} + device = i; + fprintf(stderr, "Using device %d: %s\n", + device, rtlsdr_get_device_name((uint32_t)device)); + return device; + } + /* does string suffix match a serial */ + for (i = 0; i < device_count; i++) { + rtlsdr_get_device_usb_strings(i, vendor, product, serial); + offset = strlen(serial) - strlen(s); + if (offset < 0) { + continue;} + if (strncmp(s, serial+offset, strlen(s)) != 0) { + continue;} + device = i; + fprintf(stderr, "Using device %d: %s\n", + device, rtlsdr_get_device_name((uint32_t)device)); + return device; + } + fprintf(stderr, "No matching devices found.\n"); + return -1; +} + +// vim: tabstop=8:softtabstop=8:shiftwidth=8:noexpandtab diff --git a/src/convenience/convenience.h b/src/convenience/convenience.h new file mode 100644 index 0000000..1faa2af --- /dev/null +++ b/src/convenience/convenience.h @@ -0,0 +1,142 @@ +/* + * Copyright (C) 2014 by Kyle Keen <keenerd@gmail.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +/* a collection of user friendly tools */ + +/*! + * Convert standard suffixes (k, M, G) to double + * + * \param s a string to be parsed + * \return double + */ + +double atofs(char *s); + +/*! + * Convert time suffixes (s, m, h) to double + * + * \param s a string to be parsed + * \return seconds as double + */ + +double atoft(char *s); + +/*! + * Convert percent suffixe (%) to double + * + * \param s a string to be parsed + * \return double + */ + +double atofp(char *s); + +/*! + * Find nearest supported gain + * + * \param dev the device handle given by rtlsdr_open() + * \param target_gain in tenths of a dB + * \return 0 on success + */ + +int nearest_gain(rtlsdr_dev_t *dev, int target_gain); + +/*! + * Set device frequency and report status on stderr + * + * \param dev the device handle given by rtlsdr_open() + * \param frequency in Hz + * \return 0 on success + */ + +int verbose_set_frequency(rtlsdr_dev_t *dev, uint32_t frequency); + +/*! + * Set device sample rate and report status on stderr + * + * \param dev the device handle given by rtlsdr_open() + * \param samp_rate in samples/second + * \return 0 on success + */ + +int verbose_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate); + +/*! + * Enable or disable the direct sampling mode and report status on stderr + * + * \param dev the device handle given by rtlsdr_open() + * \param on 0 means disabled, 1 I-ADC input enabled, 2 Q-ADC input enabled + * \return 0 on success + */ + +int verbose_direct_sampling(rtlsdr_dev_t *dev, int on); + +/*! + * Enable offset tuning and report status on stderr + * + * \param dev the device handle given by rtlsdr_open() + * \return 0 on success + */ + +int verbose_offset_tuning(rtlsdr_dev_t *dev); + +/*! + * Enable auto gain and report status on stderr + * + * \param dev the device handle given by rtlsdr_open() + * \return 0 on success + */ + +int verbose_auto_gain(rtlsdr_dev_t *dev); + +/*! + * Set tuner gain and report status on stderr + * + * \param dev the device handle given by rtlsdr_open() + * \param gain in tenths of a dB + * \return 0 on success + */ + +int verbose_gain_set(rtlsdr_dev_t *dev, int gain); + +/*! + * Set the frequency correction value for the device and report status on stderr. + * + * \param dev the device handle given by rtlsdr_open() + * \param ppm_error correction value in parts per million (ppm) + * \return 0 on success + */ + +int verbose_ppm_set(rtlsdr_dev_t *dev, int ppm_error); + +/*! + * Reset buffer + * + * \param dev the device handle given by rtlsdr_open() + * \return 0 on success + */ + +int verbose_reset_buffer(rtlsdr_dev_t *dev); + +/*! + * Find the closest matching device. + * + * \param s a string to be parsed + * \return dev_index int, -1 on error + */ + +int verbose_device_search(char *s); + diff --git a/src/getopt/getopt.c b/src/getopt/getopt.c new file mode 100644 index 0000000..f1d461a --- /dev/null +++ b/src/getopt/getopt.c @@ -0,0 +1,1059 @@ +/* Getopt for GNU. + NOTE: getopt is now part of the C library, so if you don't know what + "Keep this file name-space clean" means, talk to drepper@gnu.org + before changing it! + Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001 + Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ +/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. + Ditto for AIX 3.2 and <stdlib.h>. */ +#ifndef _NO_PROTO +# define _NO_PROTO +#endif + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#if !defined __STDC__ || !__STDC__ +/* This is a separate conditional since some stdc systems + reject `defined (const)'. */ +# ifndef const +# define const +# endif +#endif + +#include <stdio.h> + +/* Comment out all this code if we are using the GNU C Library, and are not + actually compiling the library itself. This code is part of the GNU C + Library, but also included in many other GNU distributions. Compiling + and linking in this code is a waste when using the GNU C library + (especially if it is a shared library). Rather than having every GNU + program understand `configure --with-gnu-libc' and omit the object files, + it is simpler to just do this in the source for each such file. */ + +#define GETOPT_INTERFACE_VERSION 2 +#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 +# include <gnu-versions.h> +# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION +# define ELIDE_CODE +# endif +#endif + +#ifndef ELIDE_CODE + + +/* This needs to come after some library #include + to get __GNU_LIBRARY__ defined. */ +#ifdef __GNU_LIBRARY__ +/* Don't include stdlib.h for non-GNU C libraries because some of them + contain conflicting prototypes for getopt. */ +# include <stdlib.h> +# include <unistd.h> +#endif /* GNU C library. */ + +#ifdef VMS +# include <unixlib.h> +# if HAVE_STRING_H - 0 +# include <string.h> +# endif +#endif + +#ifndef _ +/* This is for other GNU distributions with internationalized messages. */ +# if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC +# include <libintl.h> +# ifndef _ +# define _(msgid) gettext (msgid) +# endif +# else +# define _(msgid) (msgid) +# endif +#endif + +/* This version of `getopt' appears to the caller like standard Unix `getopt' + but it behaves differently for the user, since it allows the user + to intersperse the options with the other arguments. + + As `getopt' works, it permutes the elements of ARGV so that, + when it is done, all the options precede everything else. Thus + all application programs are extended to handle flexible argument order. + + Setting the environment variable POSIXLY_CORRECT disables permutation. + Then the behavior is completely standard. + + GNU application programs can use a third alternative mode in which + they can distinguish the relative order of options and other arguments. */ + +#include "getopt.h" + +/* For communication from `getopt' to the caller. + When `getopt' finds an option that takes an argument, + the argument value is returned here. + Also, when `ordering' is RETURN_IN_ORDER, + each non-option ARGV-element is returned here. */ + +char *optarg; + +/* Index in ARGV of the next element to be scanned. + This is used for communication to and from the caller + and for communication between successive calls to `getopt'. + + On entry to `getopt', zero means this is the first call; initialize. + + When `getopt' returns -1, this is the index of the first of the + non-option elements that the caller should itself scan. + + Otherwise, `optind' communicates from one call to the next + how much of ARGV has been scanned so far. */ + +/* 1003.2 says this must be 1 before any call. */ +int optind = 1; + +/* Formerly, initialization of getopt depended on optind==0, which + causes problems with re-calling getopt as programs generally don't + know that. */ + +int __getopt_initialized; + +/* The next char to be scanned in the option-element + in which the last option character we returned was found. + This allows us to pick up the scan where we left off. + + If this is zero, or a null string, it means resume the scan + by advancing to the next ARGV-element. */ + +static char *nextchar; + +/* Callers store zero here to inhibit the error message + for unrecognized options. */ + +int opterr = 1; + +/* Set to an option character which was unrecognized. + This must be initialized on some systems to avoid linking in the + system's own getopt implementation. */ + +int optopt = '?'; + +/* Describe how to deal with options that follow non-option ARGV-elements. + + If the caller did not specify anything, + the default is REQUIRE_ORDER if the environment variable + POSIXLY_CORRECT is defined, PERMUTE otherwise. + + REQUIRE_ORDER means don't recognize them as options; + stop option processing when the first non-option is seen. + This is what Unix does. + This mode of operation is selected by either setting the environment + variable POSIXLY_CORRECT, or using `+' as the first character + of the list of option characters. + + PERMUTE is the default. We permute the contents of ARGV as we scan, + so that eventually all the non-options are at the end. This allows options + to be given in any order, even with programs that were not written to + expect this. + + RETURN_IN_ORDER is an option available to programs that were written + to expect options and other ARGV-elements in any order and that care about + the ordering of the two. We describe each non-option ARGV-element + as if it were the argument of an option with character code 1. + Using `-' as the first character of the list of option characters + selects this mode of operation. + + The special argument `--' forces an end of option-scanning regardless + of the value of `ordering'. In the case of RETURN_IN_ORDER, only + `--' can cause `getopt' to return -1 with `optind' != ARGC. */ + +static enum +{ + REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER +} ordering; + +/* Value of POSIXLY_CORRECT environment variable. */ +static char *posixly_correct; + +#ifdef __GNU_LIBRARY__ +/* We want to avoid inclusion of string.h with non-GNU libraries + because there are many ways it can cause trouble. + On some systems, it contains special magic macros that don't work + in GCC. */ +# include <string.h> +# define my_index strchr +#else + +# if 1 //HAVE_STRING_H +# include <string.h> +# else +# include <strings.h> +# endif + +/* Avoid depending on library functions or files + whose names are inconsistent. */ + +#ifndef getenv +#ifdef _MSC_VER +// DDK will complain if you don't use the stdlib defined getenv +#include <stdlib.h> +#else +extern char *getenv (); +#endif +#endif + +static char * +my_index (str, chr) + const char *str; + int chr; +{ + while (*str) + { + if (*str == chr) + return (char *) str; + str++; + } + return 0; +} + +/* If using GCC, we can safely declare strlen this way. + If not using GCC, it is ok not to declare it. */ +#ifdef __GNUC__ +/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. + That was relevant to code that was here before. */ +# if (!defined __STDC__ || !__STDC__) && !defined strlen +/* gcc with -traditional declares the built-in strlen to return int, + and has done so at least since version 2.4.5. -- rms. */ +extern int strlen (const char *); +# endif /* not __STDC__ */ +#endif /* __GNUC__ */ + +#endif /* not __GNU_LIBRARY__ */ + +/* Handle permutation of arguments. */ + +/* Describe the part of ARGV that contains non-options that have + been skipped. `first_nonopt' is the index in ARGV of the first of them; + `last_nonopt' is the index after the last of them. */ + +static int first_nonopt; +static int last_nonopt; + +#ifdef _LIBC +/* Stored original parameters. + XXX This is no good solution. We should rather copy the args so + that we can compare them later. But we must not use malloc(3). */ +extern int __libc_argc; +extern char **__libc_argv; + +/* Bash 2.0 gives us an environment variable containing flags + indicating ARGV elements that should not be considered arguments. */ + +# ifdef USE_NONOPTION_FLAGS +/* Defined in getopt_init.c */ +extern char *__getopt_nonoption_flags; + +static int nonoption_flags_max_len; +static int nonoption_flags_len; +# endif + +# ifdef USE_NONOPTION_FLAGS +# define SWAP_FLAGS(ch1, ch2) \ + if (nonoption_flags_len > 0) \ + { \ + char __tmp = __getopt_nonoption_flags[ch1]; \ + __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ + __getopt_nonoption_flags[ch2] = __tmp; \ + } +# else +# define SWAP_FLAGS(ch1, ch2) +# endif +#else /* !_LIBC */ +# define SWAP_FLAGS(ch1, ch2) +#endif /* _LIBC */ + +/* Exchange two adjacent subsequences of ARGV. + One subsequence is elements [first_nonopt,last_nonopt) + which contains all the non-options that have been skipped so far. + The other is elements [last_nonopt,optind), which contains all + the options processed since those non-options were skipped. + + `first_nonopt' and `last_nonopt' are relocated so that they describe + the new indices of the non-options in ARGV after they are moved. */ + +#if defined __STDC__ && __STDC__ +static void exchange (char **); +#endif + +static void +exchange (argv) + char **argv; +{ + int bottom = first_nonopt; + int middle = last_nonopt; + int top = optind; + char *tem; + + /* Exchange the shorter segment with the far end of the longer segment. + That puts the shorter segment into the right place. + It leaves the longer segment in the right place overall, + but it consists of two parts that need to be swapped next. */ + +#if defined _LIBC && defined USE_NONOPTION_FLAGS + /* First make sure the handling of the `__getopt_nonoption_flags' + string can work normally. Our top argument must be in the range + of the string. */ + if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) + { + /* We must extend the array. The user plays games with us and + presents new arguments. */ + char *new_str = malloc (top + 1); + if (new_str == NULL) + nonoption_flags_len = nonoption_flags_max_len = 0; + else + { + memset (__mempcpy (new_str, __getopt_nonoption_flags, + nonoption_flags_max_len), + '\0', top + 1 - nonoption_flags_max_len); + nonoption_flags_max_len = top + 1; + __getopt_nonoption_flags = new_str; + } + } +#endif + + while (top > middle && middle > bottom) + { + if (top - middle > middle - bottom) + { + /* Bottom segment is the short one. */ + int len = middle - bottom; + register int i; + + /* Swap it with the top part of the top segment. */ + for (i = 0; i < len; i++) + { + tem = argv[bottom + i]; + argv[bottom + i] = argv[top - (middle - bottom) + i]; + argv[top - (middle - bottom) + i] = tem; + SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); + } + /* Exclude the moved bottom segment from further swapping. */ + top -= len; + } + else + { + /* Top segment is the short one. */ + int len = top - middle; + register int i; + + /* Swap it with the bottom part of the bottom segment. */ + for (i = 0; i < len; i++) + { + tem = argv[bottom + i]; + argv[bottom + i] = argv[middle + i]; + argv[middle + i] = tem; + SWAP_FLAGS (bottom + i, middle + i); + } + /* Exclude the moved top segment from further swapping. */ + bottom += len; + } + } + + /* Update records for the slots the non-options now occupy. */ + + first_nonopt += (optind - last_nonopt); + last_nonopt = optind; +} + +/* Initialize the internal data when the first call is made. */ + +#if defined __STDC__ && __STDC__ +static const char *_getopt_initialize (int, char *const *, const char *); +#endif +static const char * +_getopt_initialize (argc, argv, optstring) + int argc; + char *const *argv; + const char *optstring; +{ + /* Start processing options with ARGV-element 1 (since ARGV-element 0 + is the program name); the sequence of previously skipped + non-option ARGV-elements is empty. */ + + first_nonopt = last_nonopt = optind; + + nextchar = NULL; + + posixly_correct = getenv ("POSIXLY_CORRECT"); + + /* Determine how to handle the ordering of options and nonoptions. */ + + if (optstring[0] == '-') + { + ordering = RETURN_IN_ORDER; + ++optstring; + } + else if (optstring[0] == '+') + { + ordering = REQUIRE_ORDER; + ++optstring; + } + else if (posixly_correct != NULL) + ordering = REQUIRE_ORDER; + else + ordering = PERMUTE; + +#if defined _LIBC && defined USE_NONOPTION_FLAGS + if (posixly_correct == NULL + && argc == __libc_argc && argv == __libc_argv) + { + if (nonoption_flags_max_len == 0) + { + if (__getopt_nonoption_flags == NULL + || __getopt_nonoption_flags[0] == '\0') + nonoption_flags_max_len = -1; + else + { + const char *orig_str = __getopt_nonoption_flags; + int len = nonoption_flags_max_len = strlen (orig_str); + if (nonoption_flags_max_len < argc) + nonoption_flags_max_len = argc; + __getopt_nonoption_flags = + (char *) malloc (nonoption_flags_max_len); + if (__getopt_nonoption_flags == NULL) + nonoption_flags_max_len = -1; + else + memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), + '\0', nonoption_flags_max_len - len); + } + } + nonoption_flags_len = nonoption_flags_max_len; + } + else + nonoption_flags_len = 0; +#endif + + return optstring; +} + +/* Scan elements of ARGV (whose length is ARGC) for option characters + given in OPTSTRING. + + If an element of ARGV starts with '-', and is not exactly "-" or "--", + then it is an option element. The characters of this element + (aside from the initial '-') are option characters. If `getopt' + is called repeatedly, it returns successively each of the option characters + from each of the option elements. + + If `getopt' finds another option character, it returns that character, + updating `optind' and `nextchar' so that the next call to `getopt' can + resume the scan with the following option character or ARGV-element. + + If there are no more option characters, `getopt' returns -1. + Then `optind' is the index in ARGV of the first ARGV-element + that is not an option. (The ARGV-elements have been permuted + so that those that are not options now come last.) + + OPTSTRING is a string containing the legitimate option characters. + If an option character is seen that is not listed in OPTSTRING, + return '?' after printing an error message. If you set `opterr' to + zero, the error message is suppressed but we still return '?'. + + If a char in OPTSTRING is followed by a colon, that means it wants an arg, + so the following text in the same ARGV-element, or the text of the following + ARGV-element, is returned in `optarg'. Two colons mean an option that + wants an optional arg; if there is text in the current ARGV-element, + it is returned in `optarg', otherwise `optarg' is set to zero. + + If OPTSTRING starts with `-' or `+', it requests different methods of + handling the non-option ARGV-elements. + See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. + + Long-named options begin with `--' instead of `-'. + Their names may be abbreviated as long as the abbreviation is unique + or is an exact match for some defined option. If they have an + argument, it follows the option name in the same ARGV-element, separated + from the option name by a `=', or else the in next ARGV-element. + When `getopt' finds a long-named option, it returns 0 if that option's + `flag' field is nonzero, the value of the option's `val' field + if the `flag' field is zero. + + The elements of ARGV aren't really const, because we permute them. + But we pretend they're const in the prototype to be compatible + with other systems. + + LONGOPTS is a vector of `struct option' terminated by an + element containing a name which is zero. + + LONGIND returns the index in LONGOPT of the long-named option found. + It is only valid when a long-named option has been found by the most + recent call. + + If LONG_ONLY is nonzero, '-' as well as '--' can introduce + long-named options. */ + +int +_getopt_internal (argc, argv, optstring, longopts, longind, long_only) + int argc; + char *const *argv; + const char *optstring; + const struct option *longopts; + int *longind; + int long_only; +{ + int print_errors = opterr; + if (optstring[0] == ':') + print_errors = 0; + + if (argc < 1) + return -1; + + optarg = NULL; + + if (optind == 0 || !__getopt_initialized) + { + if (optind == 0) + optind = 1; /* Don't scan ARGV[0], the program name. */ + optstring = _getopt_initialize (argc, argv, optstring); + __getopt_initialized = 1; + } + + /* Test whether ARGV[optind] points to a non-option argument. + Either it does not have option syntax, or there is an environment flag + from the shell indicating it is not an option. The later information + is only used when the used in the GNU libc. */ +#if defined _LIBC && defined USE_NONOPTION_FLAGS +# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ + || (optind < nonoption_flags_len \ + && __getopt_nonoption_flags[optind] == '1')) +#else +# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') +#endif + + if (nextchar == NULL || *nextchar == '\0') + { + /* Advance to the next ARGV-element. */ + + /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been + moved back by the user (who may also have changed the arguments). */ + if (last_nonopt > optind) + last_nonopt = optind; + if (first_nonopt > optind) + first_nonopt = optind; + + if (ordering == PERMUTE) + { + /* If we have just processed some options following some non-options, + exchange them so that the options come first. */ + + if (first_nonopt != last_nonopt && last_nonopt != optind) + exchange ((char **) argv); + else if (last_nonopt != optind) + first_nonopt = optind; + + /* Skip any additional non-options + and extend the range of non-options previously skipped. */ + + while (optind < argc && NONOPTION_P) + optind++; + last_nonopt = optind; + } + + /* The special ARGV-element `--' |